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
		20171228 11:30:00 Geo NearIR 25.6 *** *** *** *** *** *** 0.10 *** 20171228 11:30:00 * Geo IR 25.6 -20.42 121.78 -20.42 121.78 0.18 0.51 0.30 -0.6 20171228 10:43:31 SSMIS-18 85-92GHz 26.4 -20.45 123.21 -20.54 123.22 0.24 0.69 2.40 50.4 20171228 10:05:40 SSMIS-17 85-92GHz 27.1 *** *** *** *** *** *** 3.00 ***
		20171228 08:30:00 Geo Vis 28.9 -20.67 122.28 -20.67 122.28 3.36 9.49 0.70 *** 20171228 08:30:00 Geo NearIR 28.9 -20.77 121.91 -20.77 121.91 3.36 9.49 0.30 *** 20171228 08:30:00 Geo IR 28.9 -20.32 121.56 -20.32 121.56 0.29 0.82 0.10 7.0 20171228 07:38:36 SSMIS-16 85-92GHz 29.8 -20.10 121.76 -20.19 121.78 0.25 0.71 2.60 0.3
		20171228 06:48:02 * SSMI-15 85-92GHz 30.8 -20.06 121.95 -19.91 121.92 0.19 0.53 0.70 58.0 20171228 05:30:00 Geo Vis 32.2 -20.34 121.73 -20.34 121.73 0.25 0.71 0.30 *** 20171228 05:30:00 Geo NearIR 32.2 -20.56 122.05 -20.56 122.05 0.37 1.05 0.50 *** 20171228 05:30:00 Geo IR 32.2 -20.51 122.16 -20.51 122.16 0.40 1.13 0.30 4.1
		20171228 02:30:00 Geo Vis 35.0 -19.95 121.92 -19.95 121.92 0.17 0.49 0.10 *** 20171228 02:30:00 Geo NearIR 35.0 -20.45 122.21 -20.45 122.21 0.42 1.20 0.90 *** 20171228 02:30:00 Geo IR 35.0 -20.07 121.94 -20.07 121.94 0.43 1.20 0.60 1.2 20171228 01:33:00 * Metop-B ASCAT 35.0 -19.20 121.38 -19.30 121.41 0.12 0.35 *** ***
		20171228 00:36:00 * Metop-A ASCAT 35.0 -19.21 121.45 -19.10 121.42 0.11 0.31 *** *** 20171227 23:30:00 Geo Vis 35.4 *** *** *** *** *** *** 0.30 *** 20171227 23:30:00 Geo NearIR 35.4 *** *** *** *** *** *** 0.60 *** 20171227 23:30:00 Geo IR 35.4 *** *** *** *** *** *** 0.40 *** 20171227 22:10:02 SSMIS-18 85-92GHz 36.5 -19.27 121.50 -19.40 121.53 0.24 0.69 1.80 11.1
		20171227 20:30:00 Geo NearIR 37.9 -19.65 121.84 -19.65 121.84 0.21 0.59 0.40 *** 20171227 20:30:00 Geo IR 37.9 -19.40 121.89 -19.40 121.89 0.77 2.16 0.10 30.7 20171227 20:26:39 GMI 85-92GHz 38.0 -19.04 121.63 -19.05 121.63 0.19 0.54 1.70 25.5 20171227 20:26:39 * GMI 37GHz 38.0 -19.04 121.68 -19.05 121.68 0.16 0.45 0.40 *** 20171227 19:05:36 SSMIS-16 85-92GHz 40.0 -18.85 122.01 -18.99 122.03 0.34 0.96 1.70 6.7
		20171227 17:30:00 Geo NearIR 40.0 *** *** *** *** *** *** 0.30 *** 20171227 17:30:00 Geo IR 40.0 -18.96 122.01 -18.96 122.01 0.20 0.58 0.60 43.0 20171227 16:48:38 AMSR2 85-92GHz 40.0 -18.74 121.98 -18.81 121.99 0.21 0.61 0.10 72.6 20171227 16:48:38 AMSR2 37GHz 40.0 *** *** *** *** *** *** 0.70 ***

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