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
		20171020 04:50:28 AMSR2 85-92GHz 15.5 *** *** *** *** *** *** 5.00 ***
		20171019 18:00:23 * AMSR2 85-92GHz 20.0 11.90 120.05 11.85 119.94 0.39 1.09 5.00 0.0 20171019 16:16:39 GMI 85-92GHz 21.0 *** *** *** *** *** *** 5.00 ***
		20171019 10:37:38 * SSMIS-17 85-92GHz 24.1 11.05 118.45 11.13 118.61 0.43 1.23 5.00 0.0 20171019 10:15:09 SSMIS-18 85-92GHz 24.3 11.42 119.20 11.53 119.42 0.61 1.73 0.60 0.3
		20171019 07:53:56 SSMIS-16 85-92GHz 25.0 *** *** *** *** *** *** 2.10 *** 20171019 07:01:57 * SSMI-15 85-92GHz 25.0 11.11 118.54 11.25 118.85 0.35 1.00 5.00 0.0
		20171019 05:45:11 AMSR2 85-92GHz 25.0 *** *** *** *** *** *** 2.30 *** 20171019 04:46:39 GMI 85-92GHz 25.0 *** *** *** *** *** *** 5.00 ***

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