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
		20201212 18:25:02 * SSMIS-17 85-92GHz 33.1 -15.43 173.66 -15.44 173.72 0.41 1.15 1.90 3.1 20201212 16:42:46 * SSMIS-18 85-92GHz 34.0 -15.05 171.95 -15.04 171.90 0.28 0.78 2.40 3.6 20201212 16:36:06 SSMIS-16 85-92GHz 34.1 -15.05 172.01 -15.04 171.95 0.47 1.32 2.40 1.4
		20201212 07:13:34 * SSMIS-17 85-92GHz 34.0 -15.69 174.56 -15.66 174.18 0.20 0.55 3.10 6.4
		20201212 05:30:58 SSMIS-18 85-92GHz 35.4 -15.74 174.59 -15.73 174.59 0.44 1.24 0.80 4.7
		20201212 02:33:46 AMSR2 85-92GHz 37.9 *** *** *** *** *** *** 5.00 ***
		20201211 18:37:22 SSMIS-17 85-92GHz 40.3 -14.57 177.52 -14.43 177.67 0.53 1.49 1.10 0.7 20201211 16:54:25 SSMIS-18 85-92GHz 40.0 -13.71 178.37 -13.83 178.31 0.47 1.33 3.00 0.8 20201211 16:48:34 SSMIS-16 85-92GHz 40.0 *** *** *** *** *** *** 1.40 ***
		20201211 03:57:17 * SSMIS-16 85-92GHz 35.0 -11.31 180.02 -11.03 180.34 0.16 0.44 1.20 16.4

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