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
		20251009 11:15:34 SSMIS-18 85-92GHz 33.7 17.46 -111.03 17.51 -110.86 0.32 0.91 2.70 2.9 20251009 11:13:26 * GMI 85-92GHz 33.8 17.51 -111.04 17.56 -110.86 0.30 0.84 2.90 4.6
		20251008 11:53:27 GMI 85-92GHz 35.0 15.50 -117.23 15.50 -117.22 0.26 0.72 1.90 19.6
		20251008 09:03:32 AMSR2 85-92GHz 35.0 15.25 -117.29 15.25 -117.30 0.21 0.59 1.20 28.3
		20251007 20:50:28 AMSR2 85-92GHz 40.0 15.21 -118.68 15.20 -118.66 0.18 0.50 0.90 5.5
		20251007 12:38:26 GMI 85-92GHz 45.0 *** *** *** *** *** *** 1.70 ***
		20251007 09:58:44 * AMSR2 85-92GHz 45.0 15.65 -120.26 15.70 -120.32 0.23 0.65 0.90 59.8
		20251006 23:13:26 GMI 85-92GHz 45.0 16.13 -120.62 16.12 -120.53 0.19 0.52 1.00 54.1
		20251006 21:45:59 AMSR2 85-92GHz 45.0 16.08 -120.84 16.13 -120.91 0.36 1.02 0.80 6.5
		20251005 23:58:27 * GMI 85-92GHz 70.0 16.20 -123.00 16.20 -123.00 0.14 0.40 0.10 90.7
		20251005 10:11:08 * AMSR2 85-92GHz 67.0 15.62 -124.02 15.60 -124.09 0.10 0.29 0.50 100.0
		20251005 00:38:26 * GMI 85-92GHz 55.0 15.15 -124.10 15.11 -124.08 0.19 0.54 0.50 90.5
		20251004 21:58:03 * AMSR2 85-92GHz 55.0 15.08 -124.04 14.99 -123.99 0.11 0.30 0.30 100.0
		20251004 13:08:27 GMI 85-92GHz 50.0 14.53 -123.85 14.47 -123.78 0.15 0.43 0.70 91.2
		20251004 09:28:35 * AMSR2 85-92GHz 47.9 14.38 -123.12 14.35 -123.08 0.18 0.50 0.90 100.0
		20251003 21:14:45 AMSR2 85-92GHz 50.0 13.10 -122.73 13.10 -122.68 0.34 0.97 0.40 17.5
		20251003 13:48:26 GMI 85-92GHz 46.5 *** *** *** *** *** *** 1.20 ***
		20251003 00:28:26 * GMI 85-92GHz 50.0 12.96 -119.24 12.94 -119.19 0.20 0.56 3.30 25.0
		20251001 21:26:21 * AMSR2 85-92GHz 55.0 11.54 -116.70 11.51 -116.66 0.26 0.73 0.30 75.7
		20251001 13:38:27 * GMI 85-92GHz 55.0 11.51 -115.68 11.61 -115.84 0.26 0.75 0.30 43.3
		20251001 11:28:15 SSMIS-18 85-92GHz 54.6 11.36 -115.49 11.40 -115.56 0.35 0.99 0.30 13.4
		20251001 08:58:32 AMSR2 85-92GHz 52.5 11.00 -115.08 11.00 -115.08 0.40 1.14 0.40 22.0
		20251001 02:37:34 SSMIS-16 85-92GHz 44.4 10.39 -115.09 10.41 -115.12 0.44 1.23 0.30 13.4 20251001 01:48:24 * SSMIS-17 85-92GHz 43.0 10.68 -114.63 10.76 -114.70 0.39 1.09 1.00 8.0
		20250930 20:42:52 AMSR2 85-92GHz 40.0 10.68 -114.50 10.71 -114.53 0.46 1.31 1.40 5.1
		20250930 11:41:26 SSMIS-18 85-92GHz 34.7 *** *** *** *** *** *** 1.80 ***

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