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
		20211215 04:59:11 SSMIS-18 85-92GHz 45.0 -26.96 174.84 -27.11 175.01 0.52 1.47 1.60 1.0 20211215 04:49:48 SSMIS-16 85-92GHz 45.0 -26.87 174.90 -27.06 175.12 0.57 1.61 1.60 0.6
		20211215 02:31:35 AMSR2 85-92GHz 45.0 -26.01 173.85 -26.01 173.84 0.23 0.66 0.30 64.2 20211215 02:15:19 * GMI 85-92GHz 45.0 -25.93 173.76 -26.01 173.84 0.23 0.65 0.30 62.2
		20211214 19:04:23 * SSMIS-17 85-92GHz 45.0 -24.64 171.61 -25.10 172.10 0.41 1.16 2.80 4.6
		20211214 16:29:40 * SSMIS-18 85-92GHz 45.0 -23.91 170.37 -24.09 170.63 0.31 0.87 1.40 19.6
		20211214 14:23:55 AMSR2 85-92GHz 45.0 -23.49 169.53 -23.50 169.55 0.32 0.92 1.50 29.1
		20211214 12:55:18 GMI 85-92GHz 45.0 -23.36 169.32 -23.10 168.96 0.43 1.21 1.50 7.9
		20211214 07:48:41 * SSMIS-17 85-92GHz 45.0 -22.60 167.79 -22.76 167.97 0.47 1.32 1.00 7.0
		20211214 05:13:51 * SSMIS-18 85-92GHz 46.3 -21.83 166.84 -21.87 166.92 0.27 0.78 0.40 57.1
		20211213 19:16:43 SSMIS-17 85-92GHz 58.9 *** *** *** *** *** *** 0.90 ***
		20211213 16:41:25 * SSMIS-18 85-92GHz 61.1 -19.91 163.69 -20.04 163.90 0.14 0.40 0.70 91.6
		20211213 13:45:18 GMI 85-92GHz 63.5 -19.38 163.20 -19.49 163.39 0.27 0.76 1.30 35.6
		20211213 08:03:27 * SSMIS-17 85-92GHz 65.0 -18.85 161.81 -18.94 161.90 0.18 0.51 0.70 71.8
		20211213 05:28:03 SSMIS-18 85-92GHz 65.4 -18.22 161.36 -18.23 161.37 0.30 0.86 0.60 17.5
		20211213 02:46:53 * AMSR2 85-92GHz 67.7 -17.65 160.70 -17.59 160.63 0.15 0.41 0.20 100.0
		20211212 19:29:32 SSMIS-17 85-92GHz 57.5 -16.31 159.03 -16.40 159.17 0.18 0.51 0.20 79.1 20211212 19:29:14 * SSMIS-17 85-92GHz 66.2 -16.30 159.00 -16.39 159.14 0.15 0.41 0.10 91.8
		20211212 14:40:19 GMI 85-92GHz 56.7 -15.98 158.54 -15.96 158.53 0.09 0.27 0.20 100.0 20211212 14:34:28 AMSR2 85-92GHz 56.4 -15.92 158.54 -15.91 158.53 0.10 0.28 0.20 100.0
		20211212 08:17:32 * SSMIS-17 85-92GHz 46.0 -15.15 157.85 -15.18 157.86 0.11 0.31 0.50 100.0
		20211212 05:41:00 SSMIS-18 85-92GHz 44.5 -14.81 157.72 -14.79 157.70 0.20 0.56 0.50 70.2

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