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
		20250920 12:33:27 GMI 85-92GHz 22.3 24.10 113.05 24.10 113.12 0.54 1.52 3.70 0.2
		20250920 08:17:26 * SSMIS-18 85-92GHz 24.0 23.50 113.23 23.50 113.22 0.44 1.24 0.30 6.6
		20250920 05:19:32 AMSR2 85-92GHz 25.3 23.50 113.82 23.50 113.81 0.50 1.42 2.00 1.8
		20250919 23:03:58 SSMIS-16 85-92GHz 27.9 23.56 114.39 23.57 114.36 0.41 1.16 1.90 4.2 20250919 22:20:14 SSMIS-17 85-92GHz 28.2 23.46 114.23 23.47 114.14 0.42 1.19 2.00 3.1
		20250919 21:01:09 * SSMIS-18 85-92GHz 28.7 23.54 114.17 23.53 114.21 0.34 0.96 2.40 5.0
		20250919 18:23:24 * AMSR2 85-92GHz 29.8 23.46 114.59 23.44 114.66 0.34 0.95 4.00 4.6
		20250919 08:31:15 SSMIS-18 85-92GHz 40.0 *** *** *** *** *** *** 0.30 ***
		20250919 01:48:26 GMI 85-92GHz 43.5 22.28 115.67 22.34 115.63 0.25 0.70 0.20 54.4
		20250918 23:17:52 * SSMIS-16 85-92GHz 44.4 21.78 116.26 21.80 116.24 0.40 1.13 1.40 9.4 20250918 22:34:36 SSMIS-17 85-92GHz 43.8 22.08 115.81 22.21 115.70 0.48 1.34 2.20 1.8
		20250918 17:41:13 AMSR2 85-92GHz 39.7 *** *** *** *** *** *** 3.20 ***
		20250918 05:30:43 AMSR2 85-92GHz 30.0 19.79 117.32 19.79 117.32 0.42 1.18 1.40 5.4
		20250918 02:33:27 GMI 85-92GHz 30.0 *** *** *** *** *** *** 0.20 ***
		20250917 22:49:41 * SSMIS-17 85-92GHz 29.0 19.82 118.29 19.90 118.16 0.45 1.28 3.00 3.4
		20250917 19:50:15 * SSMIS-18 85-92GHz 26.5 18.93 119.46 19.07 119.36 0.57 1.62 1.00 2.1
		20250917 13:08:26 GMI 85-92GHz 25.0 18.01 120.54 18.05 120.42 0.57 1.62 3.00 0.9
		20250917 07:16:57 SSMIS-18 85-92GHz 30.0 17.44 121.39 17.61 121.24 0.45 1.28 1.60 2.7 20250917 07:16:52 * SSMIS-18 85-92GHz 28.9 17.47 121.42 17.64 121.28 0.56 1.57 1.70 0.9
		20250917 04:47:03 * AMSR2 85-92GHz 30.0 17.23 121.38 17.34 121.30 0.25 0.69 1.50 35.6
		20250916 20:04:51 SSMIS-18 85-92GHz 39.8 *** *** *** *** *** *** 3.90 ***
		20250916 17:54:28 * AMSR2 85-92GHz 44.8 15.95 122.26 15.93 122.30 0.25 0.71 0.10 35.8
		20250916 07:30:31 SSMIS-18 85-92GHz 25.6 15.37 123.08 15.45 122.98 0.37 1.03 0.50 11.8 20250916 07:30:10 * SSMIS-18 85-92GHz 25.6 15.37 123.08 15.45 122.98 0.42 1.18 0.50 7.0

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: ARCHER Track page