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
		20181217 23:55:59 SSMIS-18 85-92GHz 20.1 19.19 82.58 19.14 82.55 0.54 1.52 5.00 0.0 20181217 22:27:51 SSMIS-16 85-92GHz 21.7 *** *** *** *** *** *** 2.40 ***
		20181217 20:27:52 * AMSR2 85-92GHz 23.9 18.63 82.25 18.64 82.25 0.50 1.42 5.00 0.0
		20181217 14:11:39 GMI 85-92GHz 30.0 17.10 82.57 17.14 82.59 0.36 1.01 5.00 0.0
		20181217 12:27:05 SSMIS-17 85-92GHz 30.0 17.42 81.83 17.27 81.83 0.63 1.79 5.00 0.0
		20181217 09:53:43 SSMIS-16 85-92GHz 35.3 16.93 81.67 16.66 81.67 0.45 1.27 1.90 2.2 20181217 08:15:58 AMSR2 85-92GHz 39.3 16.07 82.51 16.11 82.51 0.39 1.09 5.00 0.0
		20181217 01:15:05 SSMIS-17 85-92GHz 45.0 15.47 81.83 15.66 81.80 0.29 0.82 0.30 26.8
		20181217 00:09:37 SSMIS-18 85-92GHz 45.0 15.67 82.04 15.56 82.03 0.29 0.81 0.20 50.5 20181216 22:41:46 * SSMIS-16 85-92GHz 47.2 15.23 82.53 15.38 82.55 0.37 1.04 0.90 7.6
		20181216 19:46:01 AMSR2 85-92GHz 52.1 13.76 82.29 13.90 82.33 0.30 0.84 5.00 0.0
		20181216 15:01:40 * GMI 85-92GHz 55.0 13.81 82.26 13.74 82.36 0.17 0.49 0.40 93.2
		20181216 12:39:31 SSMIS-17 85-92GHz 55.0 13.44 82.76 13.27 82.96 0.28 0.79 0.60 41.9 20181216 11:33:01 SSMIS-18 85-92GHz 54.6 13.33 82.77 13.32 82.78 0.29 0.81 1.00 38.6 20181216 10:05:28 * SSMIS-16 85-92GHz 53.4 13.28 83.34 13.52 83.08 0.31 0.89 1.50 8.3
		20181216 03:36:39 GMI 85-92GHz 48.0 12.10 84.32 11.82 84.39 0.56 1.57 1.80 1.2 20181216 01:29:45 SSMIS-17 85-92GHz 46.2 11.58 84.46 11.80 84.40 0.47 1.33 4.90 2.5
		20181216 00:22:53 SSMIS-18 85-92GHz 45.0 11.73 84.48 11.66 84.53 0.37 1.04 1.30 4.0
		20181215 12:51:48 SSMIS-17 85-92GHz 35.0 10.12 85.56 10.02 85.62 0.55 1.55 5.00 0.0 20181215 11:44:48 * SSMIS-18 85-92GHz 35.0 9.42 85.42 9.40 85.43 0.30 0.86 5.00 0.0 20181215 10:17:48 * SSMIS-16 85-92GHz 35.0 10.02 85.63 10.14 85.59 0.45 1.28 5.00 3.5

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