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
		20180817 23:30:00 Geo Vis 25.4 *** *** *** *** *** *** 0.10 *** 20180817 23:30:00 Geo NearIR 25.4 32.10 115.89 32.10 115.89 1.35 3.80 0.20 *** 20180817 23:30:00 Geo IR 25.4 32.15 115.92 32.15 115.92 3.36 9.49 0.10 6.5 20180817 23:25:13 SSMIS-17 85-92GHz 25.5 32.54 115.28 32.55 115.27 0.51 1.45 0.40 2.0 20180817 22:51:39 GMI 85-92GHz 25.9 *** *** *** *** *** *** 0.40 *** 20180817 22:51:39 * GMI 37GHz 25.9 32.38 115.91 32.45 115.80 0.24 0.67 0.50 *** 20180817 22:18:22 SSMIS-18 85-92GHz 26.4 32.53 115.53 32.65 115.33 0.53 1.50 0.30 1.8
		20180817 20:30:00 Geo NearIR 27.9 32.35 115.56 32.35 115.56 2.19 6.20 0.90 *** 20180817 20:30:00 Geo IR 27.9 32.33 115.56 32.33 115.56 3.36 9.49 0.60 7.1 20180817 20:18:01 SSMIS-16 85-92GHz 28.1 32.13 116.19 32.15 116.16 0.46 1.29 2.90 3.3
		20180817 18:07:39 AMSR2 85-92GHz 29.9 31.99 116.36 31.94 116.49 0.33 0.93 2.80 5.5 20180817 18:07:39 * AMSR2 37GHz 29.9 31.99 116.36 31.94 116.49 0.32 0.90 0.40 *** 20180817 17:30:00 Geo NearIR 30.4 31.69 116.63 31.69 116.63 0.89 2.52 0.10 *** 20180817 17:30:00 Geo IR 30.4 31.49 116.49 31.49 116.49 1.29 3.64 0.10 53.2
		20180817 14:30:00 Geo NearIR 32.9 31.76 117.26 31.76 117.26 0.56 1.58 0.10 *** 20180817 14:30:00 Geo IR 32.9 31.81 117.14 31.81 117.14 0.73 2.06 0.10 34.5 20180817 13:11:40 GMI 85-92GHz 34.0 31.37 117.06 31.46 116.79 0.41 1.16 3.00 0.0 20180817 13:11:40 GMI 37GHz 34.0 31.92 117.35 32.01 117.09 0.50 1.42 1.10 ***
		20180817 11:30:00 * Geo NearIR 35.6 31.55 117.57 31.55 117.57 0.32 0.90 0.10 *** 20180817 11:30:00 Geo IR 35.6 31.52 117.57 31.52 117.57 0.51 1.44 0.10 2.5
		20180817 09:51:54 SSMIS-18 85-92GHz 37.4 30.94 118.90 30.89 119.22 0.41 1.15 1.70 13.1 20180817 08:30:00 Geo Vis 38.9 31.86 118.04 31.86 118.04 0.38 1.08 0.70 *** 20180817 08:30:00 Geo NearIR 38.9 31.44 118.39 31.44 118.39 0.63 1.79 0.20 *** 20180817 08:30:00 Geo IR 38.9 31.74 118.22 31.74 118.22 0.70 1.97 0.10 8.4 20180817 07:51:46 SSMIS-16 85-92GHz 39.6 *** *** *** *** *** *** 0.20 ***
		20180817 05:30:00 Geo Vis 42.2 31.47 118.70 31.47 118.70 0.39 1.10 0.10 *** 20180817 05:30:00 * Geo NearIR 42.2 31.47 118.99 31.47 118.99 0.29 0.83 0.60 *** 20180817 05:30:00 Geo IR 42.2 31.47 119.29 31.47 119.29 1.09 3.09 0.70 10.4
		20180817 02:30:00 * Geo Vis 45.0 31.40 119.62 31.40 119.62 0.27 0.77 0.40 *** 20180817 02:30:00 Geo NearIR 45.0 31.27 119.74 31.27 119.74 0.34 0.97 0.30 *** 20180817 02:30:00 Geo IR 45.0 31.35 119.74 31.35 119.74 0.52 1.48 0.10 1.3
		20180816 23:30:00 Geo Vis 45.4 31.19 120.63 31.19 120.63 0.35 0.99 0.10 *** 20180816 23:30:00 Geo NearIR 45.4 31.24 120.80 31.24 120.80 1.51 4.28 0.20 *** 20180816 23:30:00 Geo IR 45.4 31.09 120.74 31.09 120.74 0.58 1.65 1.00 3.1 20180816 22:31:09 SSMIS-18 85-92GHz 46.2 31.28 121.10 31.45 120.91 0.55 1.56 1.20 2.2
		20180816 20:31:23 * SSMIS-16 85-92GHz 47.9 30.88 121.16 30.88 121.16 0.20 0.58 1.30 59.9 20180816 20:30:00 Geo NearIR 47.9 30.65 121.42 30.65 121.42 1.90 5.37 0.10 *** 20180816 20:30:00 Geo IR 47.9 30.98 121.19 30.98 121.19 3.36 9.49 0.30 2.9
		20180816 17:30:00 Geo NearIR 49.2 30.32 121.64 30.32 121.64 0.40 1.13 0.20 *** 20180816 17:30:00 Geo IR 49.2 30.30 121.84 30.30 121.84 3.36 9.49 0.10 0.3 20180816 17:25:10 AMSR2 85-92GHz 49.0 30.05 121.89 30.05 121.87 0.37 1.04 0.10 59.0 20180816 17:25:10 * AMSR2 37GHz 49.0 30.60 121.89 30.60 121.87 0.24 0.67 0.50 ***
		20180816 14:30:00 Geo NearIR 44.2 30.55 122.28 30.55 122.28 1.32 3.74 0.10 *** 20180816 14:30:00 Geo IR 44.2 *** *** *** *** *** *** 0.10 ***
		20180816 11:30:00 Geo NearIR 40.0 29.85 123.42 29.85 123.42 1.93 5.45 0.80 *** 20180816 11:30:00 Geo IR 40.0 31.60 123.25 31.60 123.25 3.36 9.49 0.50 29.9
		20180816 09:30:41 SSMIS-17 85-92GHz 40.0 *** *** *** *** *** *** 3.00 *** 20180816 08:30:00 Geo Vis 40.0 30.20 123.46 30.20 123.46 0.58 1.65 0.10 *** 20180816 08:30:00 Geo NearIR 40.0 29.50 123.55 29.50 123.55 0.93 2.63 0.20 *** 20180816 08:30:00 Geo IR 40.0 29.53 123.43 29.53 123.43 0.74 2.08 0.30 52.2
		20180816 05:30:00 * Geo Vis 39.6 30.21 124.30 30.21 124.30 0.28 0.79 0.30 *** 20180816 05:30:00 Geo NearIR 39.6 30.03 124.30 30.03 124.30 0.85 2.39 0.10 *** 20180816 05:30:00 Geo IR 39.6 29.98 124.44 29.98 124.44 3.36 9.49 0.10 7.2 20180816 05:20:10 AMSR2 85-92GHz 39.4 30.08 124.27 30.08 124.24 0.34 0.95 0.40 6.6 20180816 05:20:10 AMSR2 37GHz 39.4 *** *** *** *** *** *** 0.20 ***
		20180816 02:30:00 * Geo Vis 37.1 30.21 124.45 30.21 124.45 0.30 0.85 0.10 *** 20180816 02:30:00 Geo NearIR 37.1 30.08 124.45 30.08 124.45 3.36 9.49 0.30 *** 20180816 02:30:00 Geo IR 37.1 30.13 124.39 30.13 124.39 3.36 9.49 0.30 5.7
		20180815 23:30:00 Geo Vis 35.0 29.78 124.60 29.78 124.60 3.36 9.49 0.90 *** 20180815 23:30:00 Geo NearIR 35.0 29.63 125.55 29.63 125.55 1.12 3.17 0.40 *** 20180815 23:30:00 Geo IR 35.0 29.98 124.69 29.98 124.69 3.36 9.49 0.10 0.6 20180815 23:01:39 GMI 85-92GHz 35.0 29.86 124.84 29.88 124.81 0.25 0.72 2.20 38.0 20180815 23:01:39 * GMI 37GHz 35.0 29.71 124.78 29.73 124.75 0.14 0.41 0.20 *** 20180815 22:11:27 SSMIS-17 85-92GHz 35.0 29.78 124.38 29.82 124.29 0.28 0.80 0.70 8.6
		20180815 20:30:00 Geo NearIR 35.0 29.66 125.08 29.66 125.08 0.39 1.10 0.80 *** 20180815 20:30:00 Geo IR 35.0 29.69 125.05 29.69 125.05 0.48 1.35 0.80 48.8
		20180815 17:30:00 Geo NearIR 35.0 29.19 125.63 29.19 125.63 0.42 1.19 0.80 *** 20180815 17:30:00 Geo IR 35.0 29.21 125.57 29.21 125.57 1.46 4.11 0.80 47.5
		20180815 14:30:00 * Geo NearIR 35.0 28.96 125.84 28.96 125.84 0.28 0.79 0.90 *** 20180815 14:30:00 Geo IR 35.0 28.88 125.58 28.88 125.58 0.49 1.39 0.10 55.2 20180815 13:21:40 GMI 85-92GHz 35.0 29.15 125.77 29.28 125.60 0.26 0.73 0.20 21.2 20180815 13:21:40 * GMI 37GHz 35.0 29.10 125.65 29.23 125.49 0.23 0.65 0.40 ***
		20180815 11:30:00 Geo NearIR 34.6 28.42 126.06 28.42 126.06 0.71 2.00 0.80 *** 20180815 11:30:00 Geo IR 34.6 *** *** *** *** *** *** 0.80 ***
		20180815 09:43:17 * SSMIS-17 85-92GHz 33.1 28.69 126.45 28.48 126.67 0.26 0.73 0.80 27.7 20180815 08:34:10 SSMIS-18 85-92GHz 32.1 28.53 126.43 28.52 126.44 0.40 1.12 0.70 4.8 20180815 08:30:00 Geo Vis 32.1 *** *** *** *** *** *** 0.10 *** 20180815 08:30:00 Geo NearIR 32.1 *** *** *** *** *** *** 0.60 *** 20180815 08:30:00 Geo IR 32.1 *** *** *** *** *** *** 0.80 ***
		20180815 06:35:34 * SSMIS-16 85-92GHz 30.5 27.86 126.93 27.66 127.08 0.38 1.06 0.90 9.9 20180815 05:30:00 Geo Vis 30.0 28.32 128.00 28.32 128.00 2.01 5.69 0.10 *** 20180815 05:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.20 *** 20180815 05:30:00 Geo IR 30.0 28.22 128.09 28.22 128.09 3.36 9.49 0.10 11.6 20180815 04:36:26 * AMSR2 85-92GHz 30.0 27.78 126.71 27.94 126.59 0.50 1.41 1.30 2.2 20180815 04:36:26 AMSR2 37GHz 30.0 *** *** *** *** *** *** 2.10 ***
		20180815 02:30:00 * Geo Vis 30.0 27.83 126.79 27.83 126.79 0.74 2.10 0.10 *** 20180815 02:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.60 *** 20180815 02:30:00 Geo IR 30.0 27.91 126.87 27.91 126.87 3.36 9.49 0.60 8.9
		20180814 23:30:00 Geo Vis 30.0 *** *** *** *** *** *** 0.40 *** 20180814 23:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.10 *** 20180814 23:30:00 Geo IR 30.0 *** *** *** *** *** *** 0.10 ***

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