Geo IR	85-92GHz	Date/Time_(UTC) Source Sensor Vmax(kts) ARCHER Lat Lon Geo-ref Lat Lon 50% cert. rad. 95% cert. rad. Eye diam (deg) % cert. of eye
		20180920 13:28:43 * SSMIS-18 85-92GHz 20.0 28.40 -109.46 28.20 -109.57 0.42 1.20 2.90 2.9 20180920 11:09:29 * SSMIS-16 85-92GHz 20.5 28.07 -109.70 28.20 -109.63 0.48 1.35 2.70 1.7
		20180920 09:00:00 Geo NearIR 21.7 *** *** *** *** *** *** 0.70 *** 20180920 09:00:00 Geo IR 21.7 *** *** *** *** *** *** 1.00 ***
		20180920 06:00:00 Geo NearIR 23.3 *** *** *** *** *** *** 0.20 *** 20180920 06:00:00 Geo IR 23.3 *** *** *** *** *** *** 0.20 *** 20180920 04:36:39 GMI 85-92GHz 24.1 *** *** *** *** *** *** 0.50 *** 20180920 04:36:39 GMI 37GHz 24.1 *** *** *** *** *** *** 1.40 ***
		20180920 03:00:00 Geo NearIR 25.0 *** *** *** *** *** *** 0.20 *** 20180920 03:00:00 Geo IR 25.0 *** *** *** *** *** *** 1.00 *** 20180920 01:39:40 * SSMIS-17 85-92GHz 27.2 27.11 -109.41 27.25 -109.32 0.20 0.57 1.70 58.8
		20180920 01:00:18 SSMIS-18 85-92GHz 28.3 *** *** *** *** *** *** 0.60 *** 20180920 00:00:00 Geo Vis 30.0 *** *** *** *** *** *** 0.10 *** 20180920 00:00:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.70 *** 20180920 00:00:00 Geo IR 30.0 *** *** *** *** *** *** 1.00 *** 20180919 22:41:05 SSMIS-16 85-92GHz 30.0 *** *** *** *** *** *** 1.40 ***
		20180919 21:00:00 Geo Vis 30.0 *** *** *** *** *** *** 0.90 *** 20180919 21:00:00 Geo NearIR 30.0 27.88 -109.94 27.88 -109.94 0.77 2.18 0.40 *** 20180919 21:00:00 Geo IR 30.0 *** *** *** *** *** *** 0.20 ***
		20180919 18:51:40 GMI 85-92GHz 30.0 26.16 -111.68 26.09 -111.70 0.48 1.36 2.60 4.1 20180919 18:51:40 * GMI 37GHz 30.0 26.41 -110.95 26.34 -110.97 0.24 0.68 0.70 *** 20180919 18:00:00 Geo Vis 30.0 *** *** *** *** *** *** 0.20 *** 20180919 18:00:00 Geo NearIR 30.0 26.85 -109.90 26.85 -109.90 3.36 9.49 0.10 *** 20180919 18:00:00 Geo IR 30.0 *** *** *** *** *** *** 0.20 ***
		20180919 15:00:00 Geo Vis 27.5 *** *** *** *** *** *** 0.10 *** 20180919 15:00:00 Geo NearIR 27.5 *** *** *** *** *** *** 0.30 *** 20180919 15:00:00 Geo IR 27.5 *** *** *** *** *** *** 0.90 *** 20180919 14:21:35 SSMIS-17 85-92GHz 27.0 *** *** *** *** *** *** 1.60 *** 20180919 13:42:05 SSMIS-18 85-92GHz 26.4 *** *** *** *** *** *** 1.90 ***
		20180919 12:00:00 Geo NearIR 25.0 *** *** *** *** *** *** 0.10 *** 20180919 12:00:00 Geo IR 25.0 *** *** *** *** *** *** 0.50 ***

Key:

Date/Time: UTC time. If this observation is used in the track it is marked with a "*". If it is used for its own 3-hr window, it is put in bold.

Source/sensor: Satellite source of the analyzed image.

Vmax: Maximum winds listed in the forecast center analysis/forecast, *not* ARCHER.

ARCHER lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the observation. If no center fix could be found, then it is "***".

Geo ref lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the *nearest geo image*.

50% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 50% certain. The lower the number, the more certain the position.

95% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 95% certain.

Eye diam (deg): ARCHER-resolved eye diameter (in degrees). Green: robust, yellow: less certain, red: not robust.

% cert. of eye: Percent certainty that an eye exists in this image, determined by ARCHER. Currently only available for IR and 85-92 GHz imagery.

Links to related versions: Summary table, ARCHER Track table, ARCHER Track Image Archive, Intensity Estimation, ARCHER-ERC page