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
		20180410 03:41:20 SSMIS-16 85-92GHz 71.1 *** *** *** *** *** *** 0.40 *** 20180410 02:58:54 * SSMI-15 85-92GHz 70.0 -19.05 177.99 -18.93 177.84 0.15 0.43 0.30 91.5
		20180409 18:50:13 * SSMIS-17 85-92GHz 65.0 -17.81 175.42 -17.68 175.09 0.11 0.31 0.10 98.3
		20180409 13:37:05 * AMSR2 85-92GHz 57.7 -17.78 173.91 -17.83 174.04 0.13 0.37 0.30 100.0 20180409 13:37:05 AMSR2 37GHz 57.7 -17.68 174.02 -17.73 174.15 0.18 0.50 0.20 ***
		20180409 10:27:00 Metop-B ASCAT 52.4 -17.18 173.25 -17.22 173.46 0.17 0.47 *** ***
		20180409 09:30:00 * Metop-A ASCAT 50.8 -17.16 173.12 -17.13 172.91 0.15 0.43 *** *** 20180409 07:37:46 SSMIS-17 85-92GHz 47.7 -17.16 172.65 -17.18 172.83 0.15 0.44 1.20 26.7
		20180409 06:19:57 SSMIS-18 85-92GHz 45.0 *** *** *** *** *** *** 0.60 ***
		20180409 03:15:37 SSMI-15 85-92GHz 42.7 -17.03 171.79 -16.95 171.62 0.23 0.66 2.90 2.4 20180409 02:30:00 Geo Vis 42.1 -16.51 171.26 -16.51 171.26 0.25 0.71 0.90 *** 20180409 02:30:00 Geo NearIR 42.1 *** *** *** *** *** *** 1.00 *** 20180409 02:30:00 * Geo IR 42.1 -16.53 171.67 -16.53 171.67 0.13 0.37 0.10 5.2
		20180408 23:30:00 Geo Vis 39.6 -16.59 171.44 -16.59 171.44 0.22 0.61 1.00 *** 20180408 23:30:00 Geo NearIR 39.6 -16.44 171.50 -16.44 171.50 0.38 1.08 0.20 *** 20180408 23:30:00 Geo IR 39.6 -16.39 171.44 -16.39 171.44 0.22 0.61 0.30 10.3
		20180408 20:30:00 Geo Vis 37.1 -16.50 171.15 -16.50 171.15 0.72 2.02 0.30 *** 20180408 20:30:00 Geo NearIR 37.1 -16.22 171.07 -16.22 171.07 0.73 2.06 0.80 *** 20180408 20:30:00 * Geo IR 37.1 -16.20 170.84 -16.20 170.84 0.19 0.53 0.20 7.7 20180408 19:03:11 SSMIS-17 85-92GHz 35.0 -16.33 170.62 -16.35 170.72 0.19 0.53 2.00 22.2
		20180408 17:30:00 Geo NearIR 35.0 -16.71 170.38 -16.71 170.38 0.44 1.25 0.20 *** 20180408 17:30:00 * Geo IR 35.0 -16.36 170.38 -16.36 170.38 0.17 0.48 0.20 17.7

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