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
		20250201 02:41:35 SSMIS-17 85-92GHz 35.0 *** *** *** *** *** *** 5.00 *** 20250201 01:35:13 SSMIS-16 85-92GHz 35.0 *** *** *** *** *** *** 5.00 ***
		20250131 21:53:36 AMSR2 85-92GHz 35.0 -35.12 52.70 -34.61 52.24 0.36 1.03 3.90 6.2
		20250131 15:54:02 SSMIS-16 85-92GHz 35.9 *** *** *** *** *** *** 3.40 *** 20250131 15:19:27 SSMIS-17 85-92GHz 36.1 *** *** *** *** *** *** 3.80 *** 20250131 13:48:27 GMI 85-92GHz 36.7 -33.12 50.04 -33.26 50.25 0.34 0.95 3.40 5.2 20250131 13:13:39 SSMIS-18 85-92GHz 37.0 -33.01 49.80 -33.26 50.19 0.42 1.18 3.40 3.1
		20250131 10:52:00 * AMSR2 85-92GHz 38.0 -32.57 49.15 -32.68 49.33 0.24 0.68 3.30 7.5
		20250131 02:54:05 SSMIS-17 85-92GHz 40.0 *** *** *** *** *** *** 1.70 ***
		20250131 00:48:01 SSMIS-18 85-92GHz 40.0 -30.50 47.96 -30.27 47.80 0.49 1.38 2.50 1.3 20250131 00:47:59 * SSMIS-18 85-92GHz 40.0 -30.50 47.75 -30.27 47.59 0.37 1.05 3.00 1.4
		20250130 16:09:20 SSMIS-16 85-92GHz 40.0 *** *** *** *** *** *** 1.10 ***
		20250130 15:35:10 * SSMIS-17 85-92GHz 40.0 -29.09 46.80 -28.82 46.55 0.28 0.78 3.10 5.0 20250130 13:29:07 * SSMIS-18 85-92GHz 40.0 -28.65 45.66 -28.92 45.92 0.24 0.69 3.30 9.9
		20250130 03:40:50 SSMIS-16 85-92GHz 41.0 *** *** *** *** *** *** 2.50 *** 20250130 03:06:53 SSMIS-17 85-92GHz 45.0 -26.68 44.05 -26.63 43.99 0.17 0.47 0.20 42.9 20250130 03:06:51 * SSMIS-17 85-92GHz 41.2 -26.60 44.08 -26.54 44.02 0.17 0.48 3.90 8.1 20250130 01:00:38 SSMIS-18 85-92GHz 42.1 -26.06 44.16 -26.19 44.30 0.25 0.71 0.90 31.8
		20250129 22:03:46 AMSR2 85-92GHz 43.3 -25.54 43.59 -25.64 43.70 0.28 0.80 1.00 11.8
		20250129 15:50:20 * SSMIS-17 85-92GHz 44.1 -25.36 42.95 -25.26 42.87 0.20 0.56 3.90 43.9 20250129 13:43:56 SSMIS-18 85-92GHz 43.2 -25.42 43.30 -25.47 43.34 0.56 1.58 1.60 2.1
		20250129 11:06:35 AMSR2 85-92GHz 42.1 -25.34 42.73 -25.37 42.75 0.32 0.89 0.70 14.8

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