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
		20210927 10:15:22 * SSMIS-18 85-92GHz 23.2 18.42 80.82 18.47 80.59 0.32 0.91 0.90 5.5
		20210927 08:23:11 * AMSR2 85-92GHz 24.0 18.31 80.91 18.31 80.89 0.29 0.83 0.80 8.9
		20210927 00:46:43 * SSMIS-17 85-92GHz 27.9 17.85 82.40 17.83 82.66 0.17 0.48 1.20 56.8 20210926 23:11:21 SSMIS-16 85-92GHz 28.8 18.18 82.51 18.18 82.45 0.24 0.69 0.70 25.5 20210926 23:01:38 SSMIS-18 85-92GHz 28.9 18.08 82.44 18.08 82.34 0.21 0.58 1.40 36.3
		20210926 19:51:32 AMSR2 85-92GHz 30.0 18.01 83.29 18.04 83.16 0.28 0.78 0.30 47.9
		20210926 18:55:17 * GMI 85-92GHz 30.0 18.07 83.22 18.05 83.48 0.21 0.60 0.70 50.8
		20210926 12:13:05 SSMIS-17 85-92GHz 40.0 *** *** *** *** *** *** 0.30 *** 20210926 10:37:20 SSMIS-16 85-92GHz 40.0 18.10 84.29 18.10 84.09 0.39 1.10 0.30 4.7 20210926 10:27:48 * SSMIS-18 85-92GHz 40.0 19.20 83.81 19.20 83.57 0.38 1.07 2.00 2.6
		20210926 07:39:54 AMSR2 85-92GHz 40.0 *** *** *** *** *** *** 0.70 ***
		20210926 05:40:19 GMI 85-92GHz 40.0 18.55 85.43 18.55 85.47 0.43 1.20 0.70 12.3
		20210926 00:59:37 * SSMIS-17 85-92GHz 40.0 18.97 86.93 18.93 87.22 0.41 1.16 0.60 4.5 20210925 23:24:12 * SSMIS-16 85-92GHz 40.0 18.88 87.29 18.88 87.27 0.31 0.88 1.10 13.1 20210925 23:14:27 SSMIS-18 85-92GHz 40.0 19.08 87.41 19.08 87.36 0.32 0.90 1.70 31.7
		20210925 12:26:05 * SSMIS-17 85-92GHz 40.0 18.05 88.92 18.05 88.96 0.23 0.64 0.20 5.9 20210925 10:50:15 SSMIS-16 85-92GHz 39.0 18.34 88.40 18.35 88.34 0.52 1.47 0.80 3.6 20210925 10:40:34 * SSMIS-18 85-92GHz 38.9 18.39 88.37 18.40 88.29 0.39 1.12 0.80 7.7
		20210925 01:13:11 * SSMIS-17 85-92GHz 39.0 18.35 89.49 18.35 89.47 0.44 1.23 0.30 12.5
		20210924 20:03:37 AMSR2 85-92GHz 36.7 18.55 90.24 18.55 90.15 0.53 1.48 1.30 1.5 20210924 19:10:18 GMI 85-92GHz 35.5 18.35 90.05 18.35 89.78 0.62 1.76 0.10 0.1
		20210924 12:39:51 SSMIS-17 85-92GHz 35.3 *** *** *** *** *** *** 1.00 ***

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