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
		20180520 10:59:51 * AMSR2 85-92GHz 25.8 8.10 42.42 8.07 42.39 0.44 1.24 5.00 0.0
		20180520 03:42:45 SSMIS-18 85-92GHz 31.9 8.96 42.79 9.02 42.88 0.64 1.80 5.00 0.0 20180520 03:42:04 SSMIS-18 85-92GHz 31.9 *** *** *** *** *** *** 5.00 ***
		20180520 00:53:29 * SSMIS-16 85-92GHz 34.3 9.95 42.74 10.03 42.84 0.46 1.31 0.50 4.4 20180519 22:33:15 * AMSR2 85-92GHz 37.4 9.93 43.06 9.88 42.99 0.29 0.83 0.40 42.6
		20180519 15:47:29 SSMIS-17 85-92GHz 48.7 *** *** *** *** *** *** 5.00 *** 20180519 15:46:34 SSMIS-17 85-92GHz 48.7 *** *** *** *** *** *** 5.00 *** 20180519 15:03:49 SSMIS-18 85-92GHz 49.9 *** *** *** *** *** *** 0.70 ***
		20180519 10:17:19 * AMSR2 85-92GHz 50.0 10.50 43.95 10.39 43.85 0.21 0.58 0.30 89.3
		20180519 07:26:40 * GMI 85-92GHz 50.0 10.75 44.00 10.66 43.92 0.21 0.60 0.10 83.8
		20180519 01:05:49 * SSMIS-16 85-92GHz 55.0 11.06 44.68 11.02 44.58 0.17 0.47 0.40 89.0
		20180518 20:01:40 GMI 85-92GHz 51.7 11.05 44.93 11.03 44.89 0.45 1.28 0.10 17.7
		20180518 15:17:49 SSMIS-18 85-92GHz 50.0 11.69 45.23 11.72 45.28 0.58 1.63 5.00 0.0 20180518 15:16:49 SSMIS-18 85-92GHz 50.0 11.41 45.15 11.44 45.20 0.62 1.77 4.30 0.1
		20180518 12:28:14 * SSMIS-16 85-92GHz 50.0 11.34 45.32 11.36 45.38 0.36 1.01 1.10 6.1 20180518 11:36:49 SSMI-15 85-92GHz 50.0 11.51 45.47 11.51 45.48 0.35 1.00 0.10 11.0
		20180518 03:09:14 * SSMIS-17 85-92GHz 47.6 11.77 46.11 11.82 46.16 0.22 0.62 0.20 75.9 20180518 01:18:46 SSMIS-16 85-92GHz 46.1 *** *** *** *** *** *** 0.30 ***
		20180517 22:44:39 AMSR2 85-92GHz 45.0 12.15 46.53 12.09 46.44 0.15 0.42 0.80 87.5
		20180517 12:41:34 * SSMIS-16 85-92GHz 45.0 12.58 48.04 12.62 48.15 0.23 0.66 1.20 20.6 20180517 11:53:01 SSMI-15 85-92GHz 44.9 12.75 48.16 12.76 48.19 0.38 1.08 5.00 0.0 20180517 10:30:02 * AMSR2 85-92GHz 43.8 13.13 48.06 13.11 47.98 0.19 0.55 0.30 79.6
		20180517 07:36:40 GMI 85-92GHz 41.3 13.43 48.91 13.41 48.86 0.22 0.64 5.00 0.0
		20180517 03:22:12 * SSMIS-17 85-92GHz 40.0 13.30 49.03 13.31 49.08 0.20 0.57 5.00 0.0 20180517 02:37:58 SSMIS-18 85-92GHz 40.0 13.36 49.15 13.36 49.16 0.21 0.60 5.00 0.0
		20180516 22:01:21 * AMSR2 85-92GHz 38.4 13.33 49.60 13.31 49.47 0.26 0.72 5.00 0.0
		20180516 20:11:39 * GMI 85-92GHz 36.8 12.91 49.58 12.91 49.55 0.27 0.76 5.00 0.0

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