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
		20210901 12:45:19 GMI 85-92GHz 40.0 *** *** *** *** *** *** 1.00 ***
		20210901 09:50:26 SSMIS-17 85-92GHz 40.0 *** *** *** *** *** *** 1.30 *** 20210901 09:50:21 SSMIS-17 85-92GHz 40.0 *** *** *** *** *** *** 1.30 *** 20210901 08:04:33 SSMIS-16 85-92GHz 40.0 *** *** *** *** *** *** 0.40 *** 20210901 07:49:49 SSMIS-18 85-92GHz 40.0 54.92 -37.54 55.22 -37.67 0.54 1.53 0.40 2.1 20210901 07:48:51 * SSMIS-18 85-92GHz 40.0 54.91 -37.53 55.22 -37.67 0.54 1.52 0.40 2.2
		20210901 06:24:03 SSMIS-16 85-92GHz 40.0 *** *** *** *** *** *** 5.00 *** 20210901 06:08:21 SSMIS-18 85-92GHz 40.0 *** *** *** *** *** *** 1.90 *** 20210901 04:57:19 * AMSR2 85-92GHz 40.0 53.91 -39.31 54.18 -39.43 0.58 1.63 0.30 0.9
		20210831 20:00:18 GMI 85-92GHz 41.7 50.89 -37.72 51.17 -37.89 0.39 1.11 2.00 0.7 20210831 19:54:44 SSMIS-17 85-92GHz 41.7 50.35 -38.67 50.67 -38.85 0.35 1.00 0.50 16.1
		20210831 18:09:07 SSMIS-16 85-92GHz 42.4 50.28 -37.71 50.13 -37.62 0.31 0.89 0.20 19.1 20210831 18:07:52 SSMIS-16 85-92GHz 42.4 50.28 -37.70 50.13 -37.62 0.32 0.90 0.20 18.2 20210831 17:52:38 * SSMIS-18 85-92GHz 42.6 50.23 -37.81 50.18 -37.78 0.30 0.85 0.20 21.1
		20210831 15:25:50 AMSR2 85-92GHz 43.6 50.19 -36.64 49.94 -36.55 0.62 1.77 0.10 0.1
		20210831 12:00:18 GMI 85-92GHz 45.0 *** *** *** *** *** *** 2.90 ***
		20210831 10:05:56 SSMIS-17 85-92GHz 45.8 47.04 -37.99 46.53 -38.00 0.38 1.07 0.20 12.1 20210831 10:05:54 * SSMIS-17 85-92GHz 45.8 47.04 -37.99 46.53 -38.00 0.38 1.07 0.20 12.1 20210831 08:20:02 SSMIS-16 85-92GHz 46.5 *** *** *** *** *** *** 0.20 *** 20210831 08:04:03 SSMIS-18 85-92GHz 46.6 *** *** *** *** *** *** 0.20 *** 20210831 08:03:59 SSMIS-18 85-92GHz 46.6 *** *** *** *** *** *** 0.20 ***
		20210831 04:16:50 AMSR2 85-92GHz 48.2 *** *** *** *** *** *** 0.40 ***
		20210830 20:55:18 GMI 85-92GHz 50.0 *** *** *** *** *** *** 5.00 *** 20210830 20:06:30 SSMIS-17 85-92GHz 50.0 43.49 -35.10 43.70 -34.98 0.36 1.03 1.20 8.9
		20210830 18:19:40 SSMIS-16 85-92GHz 50.0 43.01 -35.72 42.82 -35.87 0.31 0.87 1.30 30.5 20210830 18:03:31 * SSMIS-18 85-92GHz 50.0 42.87 -36.06 42.77 -36.14 0.29 0.82 1.10 30.0
		20210830 10:21:49 SSMIS-17 85-92GHz 50.0 *** *** *** *** *** *** 0.90 *** 20210830 10:21:47 SSMIS-17 85-92GHz 50.0 *** *** *** *** *** *** 0.90 ***
		20210830 05:14:06 AMSR2 85-92GHz 50.0 38.75 -40.40 38.87 -40.23 0.63 1.78 0.30 0.3
		20210829 21:50:19 * GMI 85-92GHz 50.0 36.57 -43.30 36.34 -43.85 0.64 1.79 0.80 0.1
		20210829 18:31:28 SSMIS-16 85-92GHz 50.0 *** *** *** *** *** *** 2.10 ***
		20210829 10:36:57 * SSMIS-17 85-92GHz 41.5 34.02 -48.23 34.21 -47.93 0.41 1.16 1.30 6.3
		20210829 08:33:35 * SSMIS-18 85-92GHz 36.4 33.72 -48.67 33.75 -48.63 0.24 0.68 1.40 33.5

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