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
		20210904 17:42:06 SSMIS-16 85-92GHz 20.0 38.73 166.41 38.68 166.32 0.54 1.52 3.50 1.6 20210904 17:27:07 SSMIS-18 85-92GHz 20.0 38.76 166.11 38.78 166.13 0.58 1.64 4.80 0.7
		20210904 15:26:02 AMSR2 85-92GHz 20.0 *** *** *** *** *** *** 2.20 ***
		20210904 07:03:46 * SSMIS-17 85-92GHz 20.0 36.27 162.52 36.63 162.97 0.34 0.95 2.40 2.9
		20210904 05:18:51 SSMIS-16 85-92GHz 20.4 36.13 162.09 36.17 162.14 0.50 1.42 0.20 0.7 20210904 05:03:45 SSMIS-18 85-92GHz 20.5 35.96 161.96 36.07 162.08 0.54 1.53 4.10 0.4
		20210903 19:41:37 SSMIS-17 85-92GHz 25.0 *** *** *** *** *** *** 3.20 *** 20210903 19:41:36 SSMIS-17 85-92GHz 25.0 *** *** *** *** *** *** 3.20 ***
		20210903 17:56:59 SSMIS-16 85-92GHz 25.0 33.09 159.53 32.97 159.42 0.44 1.24 2.70 2.5 20210903 17:41:49 * SSMIS-18 85-92GHz 25.3 32.92 159.23 32.87 159.19 0.33 0.94 2.60 2.0
		20210903 14:44:55 AMSR2 85-92GHz 27.7 *** *** *** *** *** *** 3.10 ***
		20210903 07:15:53 * SSMIS-17 85-92GHz 30.0 30.84 158.10 31.01 158.18 0.48 1.35 3.00 2.2
		20210903 05:30:44 * SSMIS-16 85-92GHz 30.0 31.32 157.38 31.31 157.38 0.46 1.31 2.00 2.1 20210903 05:15:32 * SSMIS-18 85-92GHz 30.0 30.77 157.14 30.81 157.15 0.57 1.62 0.90 0.7
		20210902 21:00:19 GMI 85-92GHz 30.0 *** *** *** *** *** *** 5.00 *** 20210902 19:56:24 SSMIS-17 85-92GHz 30.0 29.34 157.97 29.40 157.91 0.51 1.43 2.70 1.4 20210902 19:56:06 SSMIS-17 85-92GHz 30.0 29.35 157.99 29.41 157.93 0.50 1.42 2.80 1.5
		20210902 18:11:19 * SSMIS-16 85-92GHz 30.0 29.44 158.14 29.32 158.22 0.29 0.81 3.50 13.8 20210902 17:55:53 SSMIS-18 85-92GHz 30.0 29.28 158.03 29.20 158.08 0.50 1.41 3.10 2.2
		20210902 15:41:20 * AMSR2 85-92GHz 30.0 28.67 158.32 28.30 158.50 0.27 0.76 2.70 10.4
		20210902 07:35:19 GMI 85-92GHz 30.0 27.33 158.62 27.38 158.62 0.48 1.35 0.80 3.3 20210902 07:28:18 SSMIS-17 85-92GHz 30.0 *** *** *** *** *** *** 1.60 ***
		20210902 05:42:37 SSMIS-16 85-92GHz 30.0 *** *** *** *** *** *** 1.30 *** 20210902 05:26:55 * SSMIS-18 85-92GHz 30.0 27.48 159.08 27.48 159.08 0.52 1.47 2.40 0.6

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