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
		20250906 12:53:25 GMI 85-92GHz 55.0 *** *** *** *** *** *** 0.40 ***
		20250906 04:52:49 * SSMIS-18 85-92GHz 55.0 35.41 152.71 35.43 153.02 0.23 0.65 1.70 16.4 20250906 04:51:26 SSMIS-18 85-92GHz 55.0 35.41 152.69 35.43 153.02 0.28 0.81 1.60 5.7
		20250905 21:08:24 SSMIS-16 85-92GHz 53.4 36.11 148.87 36.08 148.50 0.31 0.88 2.10 20.7 20250905 20:31:34 * SSMIS-17 85-92GHz 53.1 35.98 148.39 35.98 148.37 0.31 0.87 2.10 12.1 20250905 19:11:51 SSMIS-18 85-92GHz 52.3 35.87 147.49 35.93 148.25 0.31 0.88 0.40 26.2
		20250905 16:28:51 AMSR2 85-92GHz 50.8 36.13 146.01 36.18 146.61 0.25 0.72 0.90 74.2
		20250905 06:47:31 SSMIS-18 85-92GHz 46.7 *** *** *** *** *** *** 0.60 *** 20250905 06:47:10 SSMIS-18 85-92GHz 37.8 35.27 137.48 35.13 136.74 0.55 1.55 2.30 0.3 20250905 05:23:26 GMI 85-92GHz 45.9 *** *** *** *** *** *** 2.20 *** 20250905 04:26:52 AMSR2 85-92GHz 45.3 *** *** *** *** *** *** 2.10 ***
		20250904 19:26:00 SSMIS-18 85-92GHz 39.6 *** *** *** *** *** *** 1.90 ***
		20250904 17:25:12 AMSR2 85-92GHz 38.4 *** *** *** *** *** *** 1.00 ***
		20250904 07:00:13 SSMIS-18 85-92GHz 35.0 *** *** *** *** *** *** 1.90 ***
		20250904 06:03:27 * GMI 85-92GHz 35.0 31.11 131.16 30.99 131.11 0.36 1.02 1.30 3.9
		20250903 19:41:33 * SSMIS-18 85-92GHz 31.4 28.47 131.04 28.70 131.04 0.44 1.23 2.20 3.6
		20250903 16:43:38 * AMSR2 85-92GHz 30.0 27.81 131.07 27.97 131.05 0.28 0.78 2.60 7.5

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