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
		20170620 20:45:00 Geo Vis 35.0 *** *** *** *** *** *** 0.10 *** 20170620 20:45:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.10 *** 20170620 20:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.10 ***
		20170620 19:05:28 * SSMI-15 85-92GHz 35.0 12.05 -66.56 11.93 -66.10 0.41 1.17 2.20 1.5 20170620 17:45:00 Geo Vis 35.2 11.93 -67.33 11.93 -67.33 3.36 9.49 0.20 *** 20170620 17:45:00 Geo NearIR 35.2 11.43 -65.87 11.43 -65.87 3.36 9.49 0.90 *** 20170620 17:45:00 Geo IR 35.2 11.31 -66.00 11.31 -66.00 3.36 9.49 1.00 8.1 20170620 17:23:43 * AMSR2 85-92GHz 35.5 11.50 -66.16 11.53 -66.31 0.38 1.08 0.60 4.3 20170620 17:23:43 AMSR2 37GHz 35.5 11.35 -65.91 11.38 -66.05 0.41 1.15 0.90 ***
		20170620 14:45:00 Geo Vis 37.7 11.30 -65.71 11.30 -65.71 1.22 3.45 0.10 *** 20170620 14:45:00 Geo NearIR 37.7 *** *** *** *** *** *** 0.40 *** 20170620 14:45:00 Geo IR 37.7 *** *** *** *** *** *** 0.30 *** 20170620 14:06:00 Metop-B ASCAT 38.2 12.26 -63.95 12.30 -64.28 1.53 4.32 *** ***
		20170620 13:12:00 Metop-A ASCAT 39.0 *** *** *** *** *** *** *** *** 20170620 11:45:00 Geo Vis 39.8 *** *** *** *** *** *** 0.60 *** 20170620 11:45:00 Geo NearIR 39.8 *** *** *** *** *** *** 0.50 *** 20170620 11:45:00 Geo IR 39.8 12.42 -62.49 12.42 -62.49 3.36 9.49 0.10 14.4 20170620 11:15:28 * SSMIS-17 85-92GHz 39.4 11.40 -64.38 11.46 -64.52 0.44 1.23 3.00 0.0 20170620 10:50:29 SSMIS-18 85-92GHz 39.0 10.83 -62.08 10.95 -62.34 0.47 1.33 1.00 3.9
		20170620 08:45:00 Geo NearIR 37.3 11.38 -62.43 11.38 -62.43 3.36 9.49 0.50 *** 20170620 08:45:00 Geo IR 37.3 12.38 -63.43 12.38 -63.43 0.95 2.68 0.50 46.4 20170620 08:05:42 SSMIS-16 85-92GHz 36.7 *** *** *** *** *** *** 3.00 ***
		20170620 05:45:00 * Geo NearIR 35.0 11.48 -61.09 11.48 -61.09 0.60 1.70 0.20 *** 20170620 05:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.50 ***
		20170620 02:45:00 Geo NearIR 35.0 10.77 -60.87 10.77 -60.87 1.14 3.24 0.10 *** 20170620 02:45:00 Geo IR 35.0 10.70 -61.05 10.70 -61.05 3.36 9.49 0.10 0.2
		20170619 23:45:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.10 *** 20170619 23:45:00 Geo IR 35.0 10.40 -60.10 10.40 -60.10 0.78 2.21 0.10 54.1 20170619 22:37:20 * SSMIS-17 85-92GHz 35.0 9.69 -60.06 9.82 -60.37 0.57 1.61 0.90 0.7
		20170619 22:11:51 SSMIS-18 85-92GHz 35.0 *** *** *** *** *** *** 0.90 *** 20170619 20:45:00 Geo Vis 35.0 *** *** *** *** *** *** 0.10 *** 20170619 20:45:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.40 *** 20170619 20:45:00 Geo IR 35.0 9.08 -58.64 9.08 -58.64 3.36 9.49 0.80 0.8 20170619 19:26:44 * SSMIS-16 85-92GHz 35.0 9.45 -58.84 9.61 -59.21 0.34 0.97 1.10 4.7
		20170619 17:45:00 Geo Vis 35.0 7.12 -58.28 7.12 -58.28 0.54 1.52 0.40 *** 20170619 17:45:00 Geo NearIR 35.0 *** *** *** *** *** *** 1.00 *** 20170619 17:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.60 ***
		20170619 15:41:39 GMI 85-92GHz 35.0 8.59 -58.64 8.50 -58.31 0.60 1.68 0.90 1.0 20170619 15:41:39 * GMI 37GHz 35.0 7.64 -57.98 7.55 -57.65 0.25 0.71 1.10 *** 20170619 14:45:00 Geo Vis 35.0 *** *** *** *** *** *** 0.30 *** 20170619 14:45:00 Geo NearIR 35.0 7.50 -58.44 7.50 -58.44 0.62 1.74 0.50 *** 20170619 14:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.60 *** 20170619 13:33:00 Metop-A ASCAT 35.0 8.40 -57.08 8.50 -57.50 0.82 2.30 *** ***
		20170619 12:48:00 Metop-B ASCAT 35.0 *** *** *** *** *** *** *** *** 20170619 11:45:00 Geo Vis 35.0 *** *** *** *** *** *** 0.70 *** 20170619 11:45:00 Geo NearIR 35.0 8.45 -55.15 8.45 -55.15 3.36 9.49 0.10 *** 20170619 11:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.30 ***
		20170619 09:48:13 * SSMIS-17 85-92GHz 35.0 7.89 -56.72 7.81 -56.30 0.38 1.08 3.00 0.0 20170619 08:45:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.60 *** 20170619 08:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.70 ***
		20170619 06:32:57 SSMI-15 85-92GHz 35.0 8.55 -54.32 8.50 -53.98 0.44 1.26 1.00 3.0 20170619 05:45:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.60 *** 20170619 05:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.60 ***
		20170619 04:11:39 GMI 85-92GHz 35.0 7.36 -53.99 7.28 -53.33 0.42 1.18 1.30 5.3 20170619 04:11:39 * GMI 37GHz 35.0 8.06 -53.29 7.98 -52.62 0.34 0.97 0.40 *** 20170619 02:45:00 * Geo NearIR 35.0 6.38 -53.79 6.38 -53.79 0.78 2.21 0.30 *** 20170619 02:45:00 Geo IR 35.0 6.40 -53.00 6.40 -53.00 3.36 9.49 0.20 3.9
		20170618 23:45:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.30 *** 20170618 23:45:00 Geo IR 35.0 *** *** *** *** *** *** 0.60 ***

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