Sondrestrom IS Radar
Contact Person:
Craig Heinselman (craig.heinselman@sri.com)
Web Pages:
http://isr.sri.com home page
(Click on 'Library of plots' for quick-look plots based on antenna mode)
http://isr.sri.com/radar.html for radar schedule and inventory
inventory lists of past experiments
http://transport.sri.com/madrigal for the recently implemented
Madrigal Database.
[NOTE: Only about 30% of
the Sondrestrom data are in the CEDAR Database.]
ACKNOWLEDGMENTS:
The Sondrestrom incoherent scatter radar is supported by the National Science
Foundation.
The incoherent scatter transmitter station at Kangerlussuaq (Sondrestrom), Greenland (66.99N, 50.95W, 185m ASL) has been in operation since February, 1983. It was moved from Chatanika, Alaska in 1982-1983, where it operated from July 1971 to March 1982. On day 359 of 2001 at 110 km altitude, the apex magnetic coordinates were (73.0, 40.5) degrees. The magnetic inclination and declination angles were 80.1 deg and -35.2 deg. The magnetic local time at 0000 Universal Time (UT) is about 2137 MLT. The solar local time (SLT) is UT minus 3 hours and 24 minutes (-50.95/15.=-3.397).
There are many pulse types used at Sondrestrom, and the modes that have been used for world day measurements are briefly described here. A more detailed description of the mode used for each experiment is given in that experiment's data (CMODEXP).
The data are routinely calibrated and are considered to be well within 10% accuracy. The calibration of received power (which is related to Ne) is done after each pulse by injecting a noise source of a known amplitude into the front end of the receiver chain. When the F-region electron densities are sufficiently high, typically near the maximum of the sun spot cycle, additional calibration is accomplished using the plasma line portion of the IS spectrum. The plasma line frequencies contain independent information about the electron density as well as the electron temperature and cross comparison with ion line power yields the desired calibration.
Because of the complexities of the modes and various assumptions, users should ALWAYS contact the data providers before using the data to get a good idea of the limitations of each kind of data. This requirement and the obligation to offer co-authorship are part of the 'Rules of the Road' for the CEDAR Database. A list of the kinds of data analyses for the Sondrestrom ISR are listed below the references.
Nonlinear least square fits of theoretical autocorrelation functions were made to observed autocorrelation fuctions (Lejeune, 1979; Wickwar et al, 1981). The ion composition is assumed to be 75% NO+ and 25% O2+ in the E region, and to be O+ in the F region, with a smooth transition from molecular to atomic ions in-between. At times, the proportion of molecular ions is underestimated (and thus both Te and Ti are underestimated). The effects of H+ are neglected, since these appear to be small at high latitudes.
From the 11 position scan, velocity components perpendicular and parallel to B are found. For each of the 3 pairs of observing directions furthest from the direction of the magnetic field, the velocity parallel to B is assumed zero, and pairs of measurements are combined to find the velocity components perpendicular to B. For each of the 2 remaining pairs of observing directions, the measurement along B is included in the derivation of the velocity components perpendicular to B. For different scans, such as the 3 position scan, data from 5 positions are used to find the 3 vector components at the time of the middle position, assuming linear changes in time. For a single azimuth position, the electric field, or ion drift velocity, can be determined as in de la Beaujardiere et al [1977]. The ion velocities can be very spiky at time resolutions of a few seconds (e.g. kindat=15610), or fairly smooth at time resolutions of a few minutes (e.g. kindat=15011), but one or the other analysis is done. F region averages over 2-12 min are also calculated (e.g. kindat=15520 and 15630), but not plotted.
LTCS Description
The experiments that produce E region neutral dynamics (cwinds),
observe at least 3 positions in the near vertical (elevation angles 70
or above) with 4 kindats. The cwinds experiments include the
official Lower Thermosphere Coupling Study
(LTCS) campaigns.
Azeem and Johnson (1997) describe the CWINDS analysis. The standard SRI analysis for LTCS assumes:
Azeem and Johnson relax the second assumption to:
Early LTCS runs prior to LTCS-8 (MLTCS-4) in July 1992 used 4*20usec multipulse data instead of the alternating code data. The multipulse scheme is generally applicable only up to about 125 km. The alternating code data has better statistics and lag spacing that is better suited for the decorrelation times of the E region, enabling measurements to be resolved throughout the E and F region. HOWEVER, ALL NEUTRAL WINDS ARE BAD ABOVE ABOUT 130 KM!
Please check the other CWINDS kindats to find out which neutral atmosphere model was used, and for plasma parameters etc. Be aware that some calculated parameters like Joule heating are estimates only (sometimes using different assumptions). Before using any of these parameters, including the neutral winds, please get in touch with the contact persons to find out about caveats and proper usage.
LTCS plots show both SRI CWINDS
neutral winds and the revised Azeem/Johnson neutral winds.
Some SRI LTCS periods are already in the DB, and old versions may be
replaced. Older revised Azeem/Johnson neutral winds may also be
replaced. After April 2002, the LTCS plots are only the SRI CWINDS
neutral winds with plots of the MODEL neutral temperature and the
MODEL ion-neutral collision frequency. Sometimes, there are 'LTCS'
winds when there are high wind conditions at the site
(e.g. 28-29 March 2005) although the basic mode is not LTCS.
References for the instrument and data processing procedures:
Azeem, S. M. I. and R. M. Johnson, Lower thermospheric neutral winds at Sondre Stromfjord: A seasonal analysis, J. Geophys. Res., 7379-7397, 1997.
de la Beaujardiere, O., R. Vondrak and M. Baron, Radar observations of electric fields and currents associated with auroral arcs, J. Geophys. Res., 82, pp 5051-5062, 1977.
Lejeune, G., A program library for incoherent scatter calculation, EISCAT Tech Note 79/18, Kiruna, Sweden, 1979.
Kelly, J.D., C.J. Heinselman, J.F. Vickrey and R.R. Vondrak, The Sondrestrom radar and accompanying ground-based instrumentation, Space Sci. Rev., 71 (1-4), 797, 1995.
Wickwar, V. B., C. Lathuillere, W. Kofman and G. Lejeune, Elevated electron temperatures in the auroral E layer measured with the Chatanika radar, J. Geophys. Res., 86, 4721-4730, 1981.
List of Kindats (kind of data analysis) for the Sondrestrom IS Radar
Summary Plots for Sondrestrom IS Radar
There are 4 areas in the summary plots for image plots as
a function of height and time of the electron density, electron
temperature, ion temperature, and either the line-of-sight velocity,
or line plots of the perpendicular and parallel ion velocities closest
to 300 km. The ion velocities from kindat=15011 are averaged over 1-3 min
and look smooth, while the ion velocities from kindat=15610 starting in 1997
are 2-15 sec resolution and are spiky (e.g. Dec 1998 with 12 sec minimum resolution),
or very spiky (e.g. Sep 1997 with ~2 sec minimum resolution). Analyses with
kindat=15610 do not contain analyses with kindat=15011, so the ion velocity
line plots are either smooth or spiky.
The F region ion velocities averaged over 2-12 min (kindat=15630 starting
in 2000 as an adjunct to 15610, or earlier as kindat=15520) are not plotted.
The image plots are binned in 30 minutes and 40 km, except
for the electron density, which has a height bin of 20 km for corrected
densities, and 10 km for uncorrected. The data are averaged above
60 degrees of elevation. There are 2 days per page.
LTCS plots are neutral horizontal winds from SRI CWINDS (kindat 15115) or from the revised study of Johnson and Azeem (kindat 30024). After April 2002, they are just the SRI CWINDS with the MODEL neutral temperature and ion-neutral collision frequency.
- Apr 13-Apr 14, 1983 All data for this period
- Apr 23-Apr 24, 1983 All data for this period
- May 18-May 19, 1983 All data for this period
- Jun 15-Jun 16, 1983 All data for this period
- Jun 25-Jun 26, 1983 All data for this period
- Jun 27-Jun 28, 1983 All data for this period
- Jun 29-Jun 30, 1983 All data for this period
- Jul 13-Jul 14, 1983 All data for this period
- Jul 23-Jul 24, 1983 All data for this period
- Aug 17-Aug 18, 1983 All data for this period
- Aug 28-Aug 29, 1983 All data for this period
- Sep 05-Sep 06, 1983 All data for this period
- Sep 09-Sep 10, 1983 All data for this period
- Sep 13-Sep 14, 1983 All data for this period
- Oct 05-Oct 06, 1983 All data for this period
- Nov 01-Nov 02, 1983 All data for this period
- Nov 03-Nov 04, 1983 All data for this period
- Nov 05-Nov 06, 1983 All data for this period
- Nov 12-Nov 13, 1983 All data for this period
- Nov 14-Nov 15, 1983 All data for this period
- Dec 13-Dec 14, 1983 All data for this period
- Jan 16-Jan 17, 1984 All data for this period
- Jan 18-Jan 19, 1984 All data for this period
- Feb 03-Feb 04, 1984 All data for this period
- Feb 07-Feb 08, 1984 All data for this period
- Mar 07-Mar 08, 1984 All data for this period
- Mar 26-Mar 27, 1984 All data for this period
- Apr 06-Apr 07, 1984 All data for this period
- Apr 24-Apr 25, 1984 All data for this period
- May 08-May 09, 1984 All data for this period
- May 09-May 10, 1984 All data for this period
- May 30-May 31, 1984 All data for this period
- Jun 26-Jun 27, 1984 All data for this period
- Jun 28-Jun 29, 1984 All data for this period
- Jul 23-Jul 24, 1984 All data for this period
- Jul 25-Jul 26, 1984 All data for this period
- Aug 21-Aug 22, 1984 All data for this period
- Aug 23-Aug 24, 1984 All data for this period
- Sep 17-Sep 18, 1984 All data for this period
- Sep 19-Sep 20, 1984 All data for this period
- Sep 21-Sep 22, 1984 All data for this period
- Oct 16-Oct 17, 1984 All data for this period
- Oct 18-Oct 19, 1984 All data for this period
- Nov 13-Nov 14, 1984 All data for this period
- Nov 15-Nov 16, 1984 All data for this period
- Nov 25-Nov 26, 1984 All data for this period
- Nov 27-Nov 28, 1984 All data for this period
- Nov 29-Nov 30, 1984 All data for this period
- Dec 18-Dec 19, 1984 All data for this period
- Dec 19-Dec 20, 1984 All data for this period
- Jan 15-Jan 16, 1985 All data for this period
- Jan 17-Jan 18, 1985 All data for this period
- Feb 17-Feb 18, 1985 All data for this period
- Feb 19-Feb 20, 1985 All data for this period
- Feb 21-Feb 22, 1985 All data for this period
- Feb 23-Feb 24, 1985 All data for this period
- Mar 20-Mar 21, 1985 All data for this period
- Mar 22-Mar 23, 1985 All data for this period
- Mar 28-Mar 29, 1985 All data for this period
- Apr 12-Apr 13, 1985 All data for this period
- Apr 18-Apr 19, 1985 All data for this period
- Apr 20-Apr 21, 1985 All data for this period
- Apr 23-Apr 24, 1985 All data for this period
- May 21-May 22, 1985 All data for this period
- Jun 25-Jun 26, 1985 All data for this period
- Jul 30-Jul 31, 1985 All data for this period
- Aug 01-Aug 02, 1985 All data for this period
- Aug 13-Aug 14, 1985 All data for this period
- Sep 10-Sep 11, 1985 All data for this period
- Oct 14-Oct 15, 1985 All data for this period
- Oct 16-Oct 17, 1985 All data for this period
- Oct 18-Oct 19, 1985 All data for this period
- Nov 11-Nov 12, 1985 All data for this period
- Nov 13-Nov 14, 1985 All data for this period
- Jan 10-Jan 11, 1986 All data for this period
- Jan 14-Jan 15, 1986 All data for this period
- Jan 16-Jan 17, 1986 All data for this period
- Feb 03-Feb 04, 1986 All data for this period
- Feb 06-Feb 07, 1986 All data for this period
- Feb 08-Feb 09, 1986 All data for this period
- Feb 10-Feb 11, 1986 All data for this period
- Mar 05-Mar 06, 1986 All data for this period
- Apr 01-Apr 02, 1986 All data for this period
- Apr 03-Apr 04, 1986 All data for this period
- Jul 09-Jul 10, 1986 All data for this period
- Aug 27-Aug 28, 1986 All data for this period
- Sep 23-Sep 24, 1986 All data for this period
- Sep 25-Sep 26, 1986 All data for this period
- Oct 08-Oct 09, 1986 All data for this period
- Oct 10-Oct 11, 1986 All data for this period
- Oct 29-Oct 30, 1986 All data for this period
- Jan 27-Jan 28, 1987 All data for this period
- Jan 29-Jan 30, 1987 All data for this period
- Mar 31-Apr 01, 1987 All data for this period
- Apr 28-Apr 29, 1987 All data for this period
- Jun 01-Jun 02, 1987 All data for this period
- Jun 03-Jun 04, 1987 All data for this period
- Jun 05-Jun 06, 1987 All data for this period
- Aug 26-Aug 27, 1987 All data for this period
- Sep 21-Sep 22, 1987 LTCS Sep 21-Sep 22, 1987 All data for this period
- Sep 23-Sep 24, 1987 LTCS Sep 23-Sep 24, 1987 All data for this period
- Sep 25-Sep 26, 1987 LTCS Sep 25-Sep 26, 1987 All data for this period
- Nov 09-Nov 10, 1987 All data for this period
- Nov 24-Nov 25, 1987 All data for this period
- Jan 12-Jan 13, 1988 All data for this period
- Jan 14-Jan 15, 1988 All data for this period
- Jan 16-Jan 17, 1988 All data for this period
- Mar 16-Mar 17, 1988 All data for this period
- Mar 18-Mar 19, 1988 All data for this period
- Mar 20-Mar 21, 1988 All data for this period
- Apr 12-Apr 13, 1988 All data for this period
- Jun 13-Jun 14, 1988 All data for this period
- Jul 12-Jul 13, 1988 All data for this period
- Sep 12-Sep 13, 1988 All data for this period
- Nov 09-Nov 10, 1988 All data for this period
- Dec 05-Dec 06, 1988 LTCS Dec 05-Dec 06, 1988 All data for this period
- Dec 07-Dec 08, 1988 LTCS Dec 07-Dec 08, 1988 All data for this period
- Dec 09-Dec 10, 1988 LTCS Dec 09-Dec 10, 1988 All data for this period
- Jan 12-Jan 13, 1989 All data for this period
- Mar 06-Mar 07, 1989 All data for this period
- Apr 10-Apr 11, 1989 All data for this period
- Apr 12-Apr 13, 1989 All data for this period
- May 09-May 10, 1989 All data for this period
- May 30-May 31, 1989 LTCS May 30-May 31, 1989 All data for this period
- Jun 01-Jun 02, 1989 LTCS Jun 01-Jun 02, 1989 All data for this period
- Jun 03-Jun 04, 1989 LTCS Jun 03-Jun 04, 1989 All data for this period
- Aug 02-Aug 03, 1989 All data for this period
- Aug 28-Aug 29, 1989 All data for this period
- Aug 30-Aug 31, 1989 All data for this period
- Sep 01-Sep 02, 1989 All data for this period
- Oct 02-Oct 03, 1989 All data for this period
- Oct 04-Oct 05, 1989 All data for this period
- Oct 06-Oct 07, 1989 All data for this period
- Oct 31-Nov 01, 1989 All data for this period
- Jan 24-Jan 25, 1990 All data for this period
- Feb 12-Feb 13, 1990 LTCS Feb 12-Feb 13, 1990 All data for this period
- Feb 14-Feb 15, 1990 LTCS Feb 14-Feb 15, 1990 All data for this period
- Feb 16-Feb 17, 1990 LTCS Feb 16-Feb 17, 1990 All data for this period
- Mar 20-Mar 21, 1990 All data for this period
- Mar 22-Mar 23, 1990 All data for this period
- May 21-May 22, 1990 All data for this period
- Jun 25-Jun 26, 1990 All data for this period
- Sep 20-Sep 21, 1990 All data for this period
- Nov 13-Nov 14, 1990 All data for this period
- Nov 15-Nov 16, 1990 All data for this period
- Dec 17-Dec 18, 1990 All data for this period
- Dec 19-Dec 20, 1990 All data for this period
- Mar 14-Mar 15, 1991 LTCS Mar 14-Mar 15, 1991 All data for this period
- Mar 16-Mar 17, 1991 LTCS Mar 16-Mar 17, 1991 All data for this period
- Mar 18-Mar 19, 1991 LTCS Mar 18-Mar 19, 1991 All data for this period
- Mar 20-Mar 21, 1991 LTCS Mar 20-Mar 21, 1991 All data for this period
- Apr 09-Apr 10, 1991 All data for this period
- Sep 11-Sep 12, 1991 All data for this period
- Dec 04-Dec 05, 1991 LTCS Dec 04-Dec 05, 1991 All data for this period
- Dec 06-Dec 07, 1991 LTCS Dec 06-Dec 07, 1991 All data for this period
- Dec 08-Dec 09, 1991 LTCS Dec 08-Dec 09, 1991 All data for this period
- Dec 10-Dec 11, 1991 LTCS Dec 10-Dec 11, 1991 All data for this period
- Jan 27-Jan 28, 1992 All data for this period
- Jan 29-Jan 30, 1992 All data for this period
- Mar 20-Mar 21, 1992 All data for this period
- Mar 28-Mar 29, 1992 All data for this period
- Mar 30-Mar 31, 1992 LTCS Mar 30-Mar 31, 1992 All data for this period
- Apr 01-Apr 02,1992 LTCS Apr 01-Apr 02, 1992 All data for this period
- May 05-May 06, 1992 All data for this period
- Jul 21-Jul 22, 1992 All data for this period
- Jul 30-Jul 31, 1992 LTCS Jul 30-Jul 31, 1992 All data for this period
- Aug 01-Aug 02, 1992 LTCS Aug 01-Aug 02, 1992 All data for this period
- Aug 03-Aug 04, 1992 LTCS Aug 03-Aug 04, 1992 All data for this period
- Aug 05-Aug 06, 1992 LTCS Aug 05-Aug 06, 1992 All data for this period
- Sep 22-Sep 23, 1992 All data for this period
- Oct 27-Oct 28, 1992 All data for this period
- Nov 23-Nov 24, 1992 All data for this period
- Nov 25-Nov 26, 1992 All data for this period
- Jan 20-Jan 21, 1993 LTCS Jan 20-Jan 21, 1993 All data for this period
- Jan 22-Jan 23, 1993 LTCS Jan 22-Jan 23, 1993 All data for this period
- Jan 24-Jan 25, 1993 LTCS Jan 24-Jan 25, 1993 All data for this period
- Jan 26-Jan 27, 1993 LTCS Jan 26-Jan 27, 1993 All data for this period
- Jan 28-Jan 29, 1993 LTCS Jan 28-Jan 29, 1993 All data for this period
- Jan 30-Jan 31, 1993 LTCS Jan 30-Jan 31, 1993 All data for this period
- Mar 17-Mar 18, 1993 All data for this period
- May 18-May 19, 1993 All data for this period
- Jun 15-Jun 16, 1993 All data for this period
- Jul 20-Jul 21, 1993 All data for this period
- Oct 18-Oct 19, 1993 All data for this period
- Nov 09-Nov 10, 1993 All data for this period
- Dec 07-Dec 08, 1993 All data for this period
- Jan 11-Jan 12, 1994 All data for this period
- Jan 13-Jan 14, 1994 All data for this period
- Feb 07-Feb 08, 1994 All data for this period
- Feb 09-Feb 10, 1994 All data for this period
- Mar 15-Mar 16, 1994 All data for this period
- Apr 12-Apr 13, 1994 All data for this period
- May 03-May 04, 1994 All data for this period
- Jun 08-Jun 09, 1994 All data for this period
- Jul 05-Jul 06, 1994 All data for this period
- Aug 10-Aug 11, 1994 LTCS Aug 10-Aug 11, 1994 All data for this period
- Aug 12-Aug 13, 1994 LTCS Aug 12-Aug 13, 1994 All data for this period
- Aug 14-Aug 15, 1994 LTCS Aug 14-Aug 15, 1994 All data for this period
- Aug 16-Aug 17, 1994 LTCS Aug 16-Aug 17, 1994 All data for this period
- Sep 06-Sep 07, 1994 All data for this period
- Oct 04-Oct 05, 1994 All data for this period
- Nov 08-Nov 09, 1994 All data for this period
- Dec 05-Dec 06, 1994 All data for this period
- Dec 07-Dec 08, 1994 All data for this period
- Feb 01-Feb 02, 1995 All data for this period
- Feb 03-Feb 04, 1995 All data for this period
- Feb 28-Mar 01, 1995 All data for this period
- Mar 02-Mar 03, 1995 All data for this period
- May 01-May 02, 1995 LTCS May 01-May 02, 1995 All data for this period
- May 03-May 04, 1995 LTCS May 03-May 04, 1995 All data for this period
- May 05-May 06, 1995 LTCS May 05-May 06, 1995 All data for this period
- Jun 20-Jun 21, 1995 All data for this period
- Aug 22-Aug 23, 1995 All data for this period
- Aug 24-Aug 25, 1995 All data for this period
- Sep 27-Sep 28, 1995 All data for this period
- Oct 23-Oct 24, 1995 All data for this period
- Oct 25-Oct 26, 1995 All data for this period
- Oct 27-Oct 28, 1995 All data for this period
- Nov 21-Nov 22, 1995 All data for this period
- Jan 22-Jan 23, 1996 All data for this period
- Jan 24-Jan 25, 1996 All data for this period
- Feb 13-Feb 14, 1996 All data for this period
- Mar 19-Mar 20, 1996 LTCS Mar 19-Mar 20, 1996 All data for this period
- Mar 21-Mar 22, 1996 LTCS Mar 21-Mar 22, 1996 All data for this period
- Apr 16-Apr 17, 1996 All data for this period
- May 14-May 15, 1996 All data for this period
- May 19-May 20, 1996 All data for this period
- Jun 18-Jun 19, 1996 All data for this period
- Jul 16-Jul 17, 1996 All data for this period
- Aug 13-Aug 14, 1996 All data for this period
- Sep 17-Sep 18, 1996 All data for this period
- Oct 08-Oct 09, 1996 LTCS Oct 08-Oct 09, 1996 All data for this period
- Oct 10-Oct 11, 1996 LTCS Oct 10-Oct 11, 1996 All data for this period
- Oct 12-Oct 13, 1996 LTCS Oct 12-Oct 13, 1996 All data for this period
- Nov 11-Nov 12, 1996 All data for this period
- Nov 13-Nov 14, 1996 All data for this period
- Dec 10-Dec 11, 1996 All data for this period
- Jan 06-Jan 07, 1997 LTCS Jan 06-Jan 07, 1997 All data for this period
- Jan 08-Jan 09, 1997 LTCS Jan 08-Jan 09, 1997 All data for this period
- Jan 10-Jan 11, 1997 LTCS Jan 10-Jan 11, 1997 All data for this period
- Mar 11-Mar 12, 1997 All data for this period
- Apr 08-Apr 09, 1997 All data for this period
- Apr 10-Apr 11, 1997 All data for this period
- Jun 03-Jun 04, 1997 All data for this period
- Jun 05-Jun 06, 1997 All data for this period
- Jun 23-Jun 24, 1997 LTCS Jun 23-Jun 24, 1997 All data for this period
- Jun 25-Jun 26, 1997 LTCS Jun 25-Jun 26, 1997 All data for this period
- Jun 27-Jun 28, 1997 LTCS Jun 27-Jun 28, 1997 All data for this period
- Sep 02-Sep 03, 1997 All data for this period
- Oct 21-Oct 22, 1997 All data for this period
- Oct 23-Oct 24, 1997 All data for this period
- Nov 03-Nov 04, 1997 All data for this period
- Dec 02-Dec 03, 1997 All data for this period
- Dec 04-Dec 05, 1997 All data for this period
- Jan 20-Jan 21, 1998 All data for this period
- Mar 23-Mar 24, 1998 LTCS Mar 23-Mar 24, 1998 All data for this period
- Mar 25-Mar 26, 1998 LTCS Mar 25-Mar 26, 1998 All data for this period
- Mar 27-Mar 28, 1998 LTCS Mar 27-Mar 28, 1998 All data for this period
- Apr 27-Apr 28, 1998 All data for this period
- Apr 29-Apr 30, 1998 All data for this period
- May 26-May 27, 1998 All data for this period
- May 28-May 29, 1998 All data for this period
- Jun 23-Jun 24, 1998 All data for this period
- Aug 18-Aug 19, 1998 All data for this period
- Oct 19-Oct 20, 1998 All data for this period
- Oct 21-Oct 22, 1998 All data for this period
- Nov 22-Nov 23, 1998 All data for this period
- Nov 24-Nov 25, 1998 All data for this period
- Dec 08-Dec 09, 1998 All data for this period
- Jan 12-Jan 13, 1999 All data for this period
- Feb 09-Feb 10, 1999 All data for this period
- Feb 11-Feb 12, 1999 All data for this period
- Mar 08-Mar 09, 1999 LTCS Mar 08-Mar 09, 1999 All data for this period
- Mar 10-Mar 11, 1999 LTCS Mar 10-Mar 11, 1999 All data for this period
- Mar 12-Mar 13, 1999 LTCS Mar 12-Mar 13, 1999 All data for this period
- Apr 20-Apr 21, 1999 All data for this period
- Apr 22-Apr 23, 1999 All data for this period
- Jul 06-Jul 07, 1999 All data for this period
- Jul 08-Jul 09, 1999 All data for this period
- Sep 14-Sep 15, 1999 All data for this period
- Sep 16-Sep 17, 1999 All data for this period
- Sep 18-Sep 19, 1999 All data for this period
- Oct 08-Oct 09, 1999 All data for this period
- Oct 12-Oct 13, 1999 LTCS Oct 12-Oct 13, 1999 All data for this period
- Oct 14-Oct 15, 1999 LTCS Oct 14-Oct 15, 1999 All data for this period
- Dec 09-Dec 10, 1999 All data for this period
- Jan 06-Jan 07, 2000 All data for this period
- Mar 14-Mar 15, 2000 All data for this period
- Mar 16-Mar 17, 2000 All data for this period
- Apr 11-Apr 12, 2000 All data for this period
- Apr 13-Apr 14, 2000 All data for this period
- Jul 05-Jul 06, 2000 All data for this period
- Jul 07-Jul 08, 2000 All data for this period
- Sep 24-Sep 25, 2000 LTCS Sep 24-Sep 25, 2000 All data for this period
- Sep 26-Sep 27, 2000 LTCS Sep 26-Sep 27, 2000 All data for this period
- Sep 28-Sep 29, 2000 LTCS Sep 28-Sep 29, 2000 All data for this period
- Oct 24-Oct 25, 2000 All data for this period
- Oct 26-Oct 27, 2000 All data for this period
- Dec 11-Dec 12, 2000 LTCS Dec 11-Dec 12, 2000 All data for this period
- Dec 13-Dec 14, 2000 LTCS Dec 13-Dec 14, 2000 All data for this period
- Dec 15-Dec 16, 2000 LTCS Dec 15-Dec 16, 2000 All data for this period
- Feb 13-Feb 14, 2001 All data for this period
- Feb 15-Feb 16, 2001 All data for this period
- Apr 16-Apr 17, 2001 All data for this period
- Apr 18-Apr 19, 2001 All data for this period
- Jul 11-Jul 12, 2001 LTCS Jul 11-Jul 12, 2001 All data for this period
- Jul 13-Jul 14, 2001 LTCS Jul 13-Jul 14, 2001 All data for this period
- Jul 15-Jul 16, 2001 LTCS Jul 15-Jul 16, 2001 All data for this period
- Sep 16-Sep 17, 2001 LTCS Sep 16-Sep 17, 2001 All data for this period
- Sep 18-Sep 19, 2001 LTCS Sep 18-Sep 19, 2001 All data for this period
- Sep 20-Sep 21, 2001 LTCS Sep 20-Sep 21, 2001 All data for this period
- Oct 09-Oct 10, 2001 All data for this period
- Oct 11-Oct 12, 2001 All data for this period
- Oct 16-Oct 17, 2001 All data for this period
- Oct 18-Oct 19, 2001 All data for this period
- Nov 13-Nov 14, 2001 All data for this period
- Nov 15-Nov 16, 2001 All data for this period
- Dec 10-Dec 11, 2001 All data for this period
- Dec 12-Dec 13, 2001 All data for this period
- Dec 14-Dec 15, 2001 All data for this period
- Mar 26-Mar 27, 2002 All data for this period
- Apr 15-Apr 16, 2002 LTCS Apr 15-Apr 16, 2002 All data for this period
- Apr 17-Apr 18, 2002 LTCS Apr 17-Apr 18, 2002 All data for this period
- Jun 11-Jun 12, 2002 All data for this period
- Aug 13-Aug 14, 2002 All data for this period
- Oct 07-Oct 08, 2002 LTCS Oct 07-Oct 08, 2002 All data for this period
- Oct 09-Oct 10, 2002 LTCS Oct 09-Oct 10, 2002 All data for this period
- Oct 11-Oct 12, 2002 LTCS Oct 11-Oct 12, 2002 All data for this period
- Nov 11-Nov 12, 2002 LTCS Nov 11-Nov 12, 2002 All data for this period
- Nov 13-Nov 14, 2002 LTCS Nov 13-Nov 14, 2002 All data for this period
- Nov 15-Nov 16, 2002 LTCS Nov 15-Nov 16, 2002 All data for this period
- Dec 03-Dec 04, 2002 All data for this period
- Dec 05-Dec 06, 2002 All data for this period
- Mar 19-Mar 20, 2003 LTCS Mar 19-Mar 20, 2003 All data for this period
- Mar 21-Mar 22, 2003 LTCS Mar 21-Mar 22, 2003 All data for this period
- Mar 23-Mar 24, 2003 LTCS Mar 23-Mar 24, 2003 All data for this period
- May 27-May 28, 2003 All data for this period
- May 29-May 30, 2003 All data for this period
- Jun 24-Jun 25, 2003 All data for this period
- Jun 26-Jun 27, 2003 All data for this period
- Sep 22-Sep 23, 2003 LTCS Sep 22-Sep 23, 2003 All data for this period
- Sep 24-Sep 25, 2003 LTCS Sep 24-Sep 25, 2003 All data for this period
- Sep 26-Sep 27, 2003 LTCS Sep 26-Sep 27, 2003 All data for this period
- Oct 21-Oct 22, 2003 LTCS Oct 21-Oct 22, 2003 All data for this period
- Oct 23-Oct 24, 2003 LTCS Oct 23-Oct 24, 2003 All data for this period
- Nov 11-Nov 12, 2003 LTCS Nov 11-Nov 12, 2003 All data for this period
- Nov 13-Nov 14, 2003 LTCS Nov 13-Nov 14, 2003 All data for this period
- Nov 15-Nov 16, 2003 LTCS Nov 15-Nov 16, 2003 All data for this period
- Dec 16-Dec 17, 2003 All data for this period
- Dec 18-Dec 19, 2003 All data for this period
- Mar 29-Mar 30, 2004 All data for this period
- Mar 31-Apr 01, 2004 All data for this period
- Apr 02-Apr 03, 2004 All data for this period
- May 17-May 18, 2004 All data for this period
- May 19-May 20, 2004 All data for this period
- Jun 14-Jun 15, 2004 LTCS Jun 14-Jun 15, 2004 All data for this period
- Jun 16-Jun 17, 2004 LTCS Jun 16-Jun 17, 2004 All data for this period
- Jun 18-Jun 19, 2004 LTCS Jun 18-Jun 19, 2004 All data for this period
- Sep 13-Sep 14, 2004 All data for this period
- Sep 15-Sep 16, 2004 All data for this period
- Nov 09-Nov 10, 2004 LTCS Nov 09-Nov 10, 2004 All data for this period
- Nov 11-Nov 12, 2004 LTCS Nov 11-Nov 12, 2004 All data for this period
- Nov 13-Nov 14, 2004 LTCS Nov 13-Nov 14, 2004 All data for this period
- Dec 06-Dec 07, 2004 All data for this period
- Dec 08-Dec 09, 2004 All data for this period
- Mar 28-Mar 29, 2005 LTCS Mar 28-Mar 29, 2005 All data for this period
- Mar 30-Mar 31, 2005 All data for this period
- Apr 01-Apr 02, 2005 All data for this period
- Jun 13-Jun 14, 2005 LTCS Jun 13-Jun 14, 2005 All data for this period
- Jun 15-Jun 16, 2005 LTCS Jun 15-Jun 16, 2005 All data for this period
- Jun 17-Jun 18, 2005 LTCS Jun 17-Jun 18, 2005 All data for this period
- Aug 10-Aug 11, 2005 LTCS Aug 10-Aug 11, 2005 All data for this period
- Aug 12-Aug 13, 2005 LTCS Aug 12-Aug 13, 2005 All data for this period
- Sep 01-Sep 02, 2005 LTCS Sep 01-Sep 02, 2005 All data for this period
- Sep 03-Sep 04, 2005 LTCS Sep 03-Sep 04, 2005 All data for this period
- Sep 05-Sep 06, 2005 LTCS Sep 05-Sep 06, 2005 All data for this period
- Sep 07-Sep 08, 2005 LTCS Sep 07-Sep 08, 2005 All data for this period
- Sep 09-Sep 10, 2005 LTCS Sep 09-Sep 10, 2005 All data for this period
- Sep 11-Sep 12, 2005 LTCS Sep 11-Sep 12, 2005 All data for this period
- Sep 13-Sep 14, 2005 LTCS Sep 13-Sep 14, 2005 All data for this period
- Sep 15-Sep 16, 2005 LTCS Sep 15-Sep 16, 2005 All data for this period
- Sep 17-Sep 18, 2005 LTCS Sep 17-Sep 18, 2005 All data for this period
- Sep 19-Sep 20, 2005 LTCS Sep 19-Sep 20, 2005 All data for this period
- Sep 21-Sep 22, 2005 LTCS Sep 21-Sep 22, 2005 All data for this period
- Sep 23-Sep 24, 2005 LTCS Sep 23-Sep 24, 2005 All data for this period
- Sep 25-Sep 26, 2005 LTCS Sep 25-Sep 26, 2005 All data for this period
- Sep 27-Sep 28, 2005 LTCS Sep 27-Sep 28, 2005 All data for this period
- Sep 29-Sep 30, 2005 LTCS Sep 29-Sep 30, 2005 All data for this period
- Nov 17-Nov 18, 2005 LTCS Nov 17-Nov 18, 2005 All data for this period
- Nov 19-Nov 20, 2005 LTCS Nov 19-Nov 20, 2005 All data for this period
- Mar 06-Mar 07, 2006 and LTCS Mar 06-Mar 07, 2006
All data for this period
- Mar 08-Mar 09, 2006 and LTCS Mar 08-Mar 09, 2006
- Mar 10-Mar 11, 2006 and LTCS Mar 10-Mar 11, 2006
- Mar 12-Mar 13, 2006 and LTCS Mar 12-Mar 13, 2006
- Mar 14-Mar 15, 2006 and LTCS Mar 14-Mar 15, 2006
- Mar 16-Mar 17, 2006 and LTCS Mar 16-Mar 17, 2006
- Mar 18-Mar 19, 2006 and LTCS Mar 18-Mar 19, 2006
- Mar 20-Mar 21, 2006 and LTCS Mar 20-Mar 21, 2006
- Mar 22-Mar 23, 2006 and LTCS Mar 22-Mar 23, 2006
- Mar 24-Mar 25, 2006 and LTCS Mar 24-Mar 25, 2006
- Mar 26-Mar 27, 2006 and LTCS Mar 26-Mar 27, 2006
- Mar 28-Mar 29, 2006 and LTCS Mar 28-Mar 29, 2006
- Mar 30-Mar 31, 2006 and LTCS Mar 30-Mar 31, 2006
- Apr 01-Apr 02, 2006 and LTCS Apr 01-Apr 02, 2006
- Apr 03-Apr 04, 2006 and LTCS Apr 03-Apr 04, 2006
- Apr 05-Apr 06, 2006 and LTCS Apr 05-Apr 06, 2006
- Jun 26-Jun 27, 2006 All data for this period
- Jun 26-Jun 27, 2006 (high wind period) and LTCS Jun 26-Jun 27, 2006
- Jun 28-Jun 29, 2006 All data for this period
- Jun 30-Jul 01, 2006 and LTCS Jun 30-Jul 01, 2006
- Jun 30-Jul 01, 2006 (high wind period) All data for this period
- Sep 20-Sep 21, 2006 All data for this period
- Sep 22-Sep 23, 2006 All data for this period
- Jan 20-Jan 21, 2007 All data for this period
- Jan 22-Jan 23, 2007 All data for this period
- Mar 01-Mar 02, 2007 All data for this period
- Mar 03-Mar 04, 2007 All data for this period
- Mar 05-Mar 06, 2007 All data for this period
- May 01-May 02, 2007 All data for this period
- May 03-May 04, 2007 All data for this period
- Jun 19-Jun 20, 2007 All data for this period
- Jun 21-Jun 22, 2007 All data for this period
- Jun 23-Jun 24, 2007 All data for this period
- Jun 20-Jun 21, 2007 (high wind period) and LTCS Jun 20-Jun 21, 2007 All
