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
		20190522 16:59:55 AMSR2 85-92GHz 25.4 *** *** *** *** *** *** 0.30 *** 20190522 16:59:55 AMSR2 37GHz 25.4 *** *** *** *** *** *** 3.00 ***
		20190522 14:21:00 Metop-A ASCAT 26.5 31.90 -64.34 31.92 -64.18 3.36 9.49 *** ***
		20190522 09:44:10 SSMIS-18 85-92GHz 28.4 *** *** *** *** *** *** 2.80 *** 20190522 08:34:46 * SSMIS-16 85-92GHz 28.9 31.36 -66.27 31.37 -66.22 0.32 0.91 2.90 4.0
		20190522 05:59:36 * AMSR2 85-92GHz 30.0 31.45 -66.88 31.44 -66.93 0.29 0.83 0.20 6.4 20190522 05:59:36 AMSR2 37GHz 30.0 *** *** *** *** *** *** 0.30 ***
		20190522 02:16:40 * GMI 85-92GHz 30.0 31.08 -67.54 31.10 -67.48 0.35 0.99 0.10 2.4 20190522 02:16:40 GMI 37GHz 30.0 31.23 -67.48 31.25 -67.42 0.41 1.15 0.40 ***
		20190521 21:17:27 * SSMIS-18 85-92GHz 30.0 31.01 -68.08 30.99 -68.17 0.29 0.81 2.00 4.5 20190521 20:07:51 SSMIS-16 85-92GHz 30.0 30.91 -68.22 30.94 -68.11 0.31 0.87 1.70 4.7
		20190521 17:54:57 AMSR2 85-92GHz 30.0 30.80 -68.75 30.80 -68.77 0.32 0.90 1.90 4.7 20190521 17:54:57 AMSR2 37GHz 30.0 31.10 -68.58 31.10 -68.59 0.58 1.63 0.90 *** 20190521 16:36:40 GMI 85-92GHz 30.0 30.95 -68.99 30.95 -68.88 0.40 1.13 0.10 4.4 20190521 16:36:40 * GMI 37GHz 30.0 31.05 -68.65 31.05 -68.53 0.23 0.65 2.30 ***
		20190521 14:42:00 Metop-A ASCAT 30.0 *** *** *** *** *** *** *** ***
		20190521 09:57:11 * SSMIS-18 85-92GHz 31.7 30.43 -69.34 30.21 -69.29 0.30 0.86 2.40 3.8 20190521 08:48:09 SSMIS-16 85-92GHz 32.7 30.48 -69.53 30.47 -69.52 0.43 1.21 2.40 1.4
		20190521 06:55:16 AMSR2 85-92GHz 35.0 30.32 -69.29 30.15 -69.24 0.32 0.90 0.30 6.9 20190521 06:55:16 * AMSR2 37GHz 35.0 29.92 -69.17 29.75 -69.12 0.26 0.74 0.70 ***
		20190521 03:11:39 * GMI 85-92GHz 35.0 29.64 -69.21 29.59 -69.18 0.23 0.65 1.70 9.1 20190521 03:11:39 GMI 37GHz 35.0 29.44 -68.98 29.39 -68.95 0.40 1.14 1.20 *** 20190521 01:54:00 Metop-B ASCAT 35.0 *** *** *** *** *** *** *** ***
		20190521 00:42:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** *** 20190521 00:39:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
		20190520 21:29:25 SSMIS-18 85-92GHz 35.0 *** *** *** *** *** *** 1.80 *** 20190520 20:20:22 SSMIS-16 85-92GHz 35.0 *** *** *** *** *** *** 1.40 ***

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: Summary table, ARCHER Track table, ARCHER Track Image Archive, Intensity Estimation, ARCHER-ERC page