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
		20170731 23:30:00 Geo Vis 20.2 *** *** *** *** *** *** 0.20 *** 20170731 23:30:00 Geo NearIR 20.2 31.06 115.58 31.06 115.58 1.30 3.66 0.90 *** 20170731 23:30:00 Geo IR 20.2 30.96 115.72 30.96 115.72 3.36 9.49 0.70 2.3 20170731 22:34:06 SSMIS-18 85-92GHz 20.6 *** *** *** *** *** *** 0.30 ***
		20170731 21:03:26 SSMIS-16 85-92GHz 21.2 *** *** *** *** *** *** 3.00 *** 20170731 20:30:00 Geo NearIR 21.5 28.96 116.95 28.96 116.95 2.31 6.54 0.70 *** 20170731 20:30:00 Geo IR 21.5 29.01 116.90 29.01 116.90 3.36 9.49 0.70 1.6
		20170731 18:57:34 * SSMI-15 85-92GHz 22.1 28.74 117.07 28.52 117.27 0.63 1.78 1.30 0.0 20170731 17:30:00 Geo NearIR 22.7 29.34 116.64 29.34 116.64 1.25 3.53 0.90 *** 20170731 17:30:00 Geo IR 22.7 29.17 116.64 29.17 116.64 3.36 9.49 0.60 13.1
		20170731 15:16:39 GMI 85-92GHz 23.6 28.53 117.28 28.40 117.38 0.63 1.79 2.00 0.0 20170731 15:16:39 * GMI 37GHz 23.6 28.98 116.48 28.85 116.59 0.26 0.75 0.60 *** 20170731 14:30:00 Geo NearIR 24.0 28.90 116.76 28.90 116.76 3.36 9.49 0.20 *** 20170731 14:30:00 Geo IR 24.0 28.33 116.90 28.33 116.90 3.36 9.49 0.50 0.2
		20170731 12:39:00 Metop-B ASCAT 24.7 *** *** *** *** *** *** *** *** 20170731 11:30:00 Geo NearIR 25.3 28.39 117.61 28.39 117.61 0.79 2.25 0.20 *** 20170731 11:30:00 Geo IR 25.3 28.44 117.53 28.44 117.53 3.36 9.49 0.20 4.3 20170731 10:05:35 SSMIS-18 85-92GHz 26.1 26.93 117.52 27.17 117.33 0.51 1.43 0.90 1.5
		20170731 09:55:22 * SSMIS-17 85-92GHz 26.2 26.80 117.76 26.54 117.95 0.45 1.28 0.80 2.5 20170731 08:30:00 Geo Vis 26.9 *** *** *** *** *** *** 0.80 *** 20170731 08:30:00 Geo NearIR 26.9 27.69 118.35 27.69 118.35 3.36 9.49 0.10 *** 20170731 08:30:00 Geo IR 26.9 28.22 117.39 28.22 117.39 3.36 9.49 0.20 2.3
		20170731 06:29:24 SSMI-15 85-92GHz 28.1 *** *** *** *** *** *** 1.40 *** 20170731 05:49:47 AMSR2 85-92GHz 28.4 *** *** *** *** *** *** 0.60 *** 20170731 05:49:47 AMSR2 37GHz 28.4 *** *** *** *** *** *** 0.70 *** 20170731 05:30:00 Geo Vis 28.6 *** *** *** *** *** *** 0.10 *** 20170731 05:30:00 Geo NearIR 28.6 *** *** *** *** *** *** 0.60 *** 20170731 05:30:00 Geo IR 28.6 *** *** *** *** *** *** 0.30 ***
		20170731 02:30:00 Geo Vis 30.0 *** *** *** *** *** *** 0.10 *** 20170731 02:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.20 *** 20170731 02:30:00 Geo IR 30.0 *** *** *** *** *** *** 0.10 *** 20170731 02:09:00 Metop-A ASCAT 30.0 26.01 119.64 26.07 119.59 3.36 9.49 *** *** 20170731 01:27:00 Metop-B ASCAT 30.0 *** *** *** *** *** *** *** *** 20170731 01:24:00 Metop-B ASCAT 30.0 26.04 119.62 26.22 119.48 3.36 9.49 *** ***
		20170730 23:30:00 Geo Vis 30.4 *** *** *** *** *** *** 0.60 *** 20170730 23:30:00 Geo NearIR 30.4 *** *** *** *** *** *** 0.10 *** 20170730 23:30:00 Geo IR 30.4 27.07 118.03 27.07 118.03 3.36 9.49 0.20 6.8 20170730 22:47:25 SSMIS-18 85-92GHz 31.0 *** *** *** *** *** *** 3.00 *** 20170730 22:37:55 SSMIS-17 85-92GHz 31.1 *** *** *** *** *** *** 3.00 ***
		20170730 20:30:00 Geo NearIR 32.9 *** *** *** *** *** *** 0.40 *** 20170730 20:30:00 Geo IR 32.9 *** *** *** *** *** *** 0.40 *** 20170730 19:36:34 * SSMIS-16 85-92GHz 33.7 24.65 120.02 24.88 119.88 0.59 1.67 1.40 0.9 20170730 19:13:31 SSMI-15 85-92GHz 34.0 *** *** *** *** *** *** 2.40 ***
		20170730 17:30:00 Geo NearIR 34.6 *** *** *** *** *** *** 0.20 *** 20170730 17:30:00 Geo IR 34.6 *** *** *** *** *** *** 0.20 *** 20170730 17:14:23 AMSR2 85-92GHz 34.4 *** *** *** *** *** *** 3.00 *** 20170730 17:14:23 AMSR2 37GHz 34.4 *** *** *** *** *** *** 0.90 ***
		20170730 14:30:00 Geo NearIR 32.1 *** *** *** *** *** *** 1.00 *** 20170730 14:30:00 Geo IR 32.1 *** *** *** *** *** *** 0.90 *** 20170730 13:45:00 Metop-A ASCAT 31.5 23.66 119.58 23.80 119.53 1.09 3.09 *** ***
		20170730 13:00:00 Metop-B ASCAT 30.0 23.63 120.01 23.33 120.02 1.35 3.82 *** *** 20170730 12:57:00 Metop-B ASCAT 30.0 23.62 120.01 23.32 120.03 1.61 4.54 *** *** 20170730 11:30:00 Geo NearIR 30.4 *** *** *** *** *** *** 0.10 *** 20170730 11:30:00 Geo IR 30.4 *** *** *** *** *** *** 0.10 *** 20170730 10:16:40 SSMIS-18 85-92GHz 31.4 *** *** *** *** *** *** 1.10 *** 20170730 10:07:03 SSMIS-17 85-92GHz 31.6 22.59 120.24 22.88 120.28 0.55 1.54 1.10 1.9
		20170730 08:30:00 Geo Vis 32.9 *** *** *** *** *** *** 0.20 *** 20170730 08:30:00 * Geo NearIR 32.9 23.81 119.89 23.81 119.89 0.39 1.11 0.80 *** 20170730 08:30:00 Geo IR 32.9 23.96 119.56 23.96 119.56 1.87 5.29 0.30 47.6
		20170730 05:30:00 Geo Vis 35.0 22.67 120.25 22.67 120.25 0.65 1.85 0.20 *** 20170730 05:30:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.70 *** 20170730 05:30:00 Geo IR 35.0 *** *** *** *** *** *** 0.60 *** 20170730 05:05:24 AMSR2 85-92GHz 35.0 21.91 120.44 22.02 120.48 0.54 1.53 0.80 2.5 20170730 05:05:24 AMSR2 37GHz 35.0 21.71 120.23 21.82 120.26 0.48 1.37 0.50 *** 20170730 04:46:39 GMI 85-92GHz 35.0 *** *** *** *** *** *** 1.40 *** 20170730 04:46:39 * GMI 37GHz 35.0 21.32 120.00 21.52 120.06 0.42 1.18 0.40 ***
		20170730 02:30:00 Geo Vis 35.0 *** *** *** *** *** *** 0.40 *** 20170730 02:30:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.20 *** 20170730 02:30:00 Geo IR 35.0 21.13 120.33 21.13 120.33 3.36 9.49 0.70 14.8
		20170729 23:30:00 Geo Vis 35.0 *** *** *** *** *** *** 0.10 *** 20170729 23:30:00 Geo NearIR 35.0 20.08 119.81 20.08 119.81 0.56 1.58 0.50 *** 20170729 23:30:00 Geo IR 35.0 20.13 119.78 20.13 119.78 3.36 9.49 0.40 0.1 20170729 23:01:18 * SSMIS-18 85-92GHz 35.0 19.87 119.24 19.93 119.34 0.32 0.92 1.30 9.3 20170729 22:52:17 SSMIS-17 85-92GHz 35.0 19.80 119.10 19.88 119.24 0.50 1.42 1.40 1.9
		20170729 20:30:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.80 *** 20170729 20:30:00 Geo IR 35.0 *** *** *** *** *** *** 0.80 *** 20170729 19:51:01 SSMIS-16 85-92GHz 35.0 19.70 119.06 19.75 119.25 0.35 0.99 1.50 6.7
		20170729 18:10:55 AMSR2 85-92GHz 35.0 19.42 118.66 19.37 118.57 0.27 0.76 1.60 10.1 20170729 18:10:55 * AMSR2 37GHz 35.0 19.27 118.66 19.22 118.57 0.16 0.45 1.00 *** 20170729 17:30:00 Geo NearIR 35.0 *** *** *** *** *** *** 0.10 *** 20170729 17:30:00 Geo IR 35.0 *** *** *** *** *** *** 0.60 ***
		20170729 14:30:00 Geo NearIR 35.0 19.05 118.08 19.05 118.08 0.51 1.45 0.30 *** 20170729 14:30:00 Geo IR 35.0 19.10 117.84 19.10 117.84 0.91 2.58 0.10 65.7
		20170729 11:30:00 * Geo NearIR 35.4 18.90 117.77 18.90 117.77 0.26 0.74 0.20 *** 20170729 11:30:00 Geo IR 35.4 19.15 117.63 19.15 117.63 0.29 0.83 0.60 73.6 20170729 10:28:05 * SSMIS-18 85-92GHz 36.3 18.70 117.60 18.78 117.71 0.19 0.54 0.70 26.1 20170729 10:19:32 SSMIS-17 85-92GHz 36.4 18.63 117.58 18.73 117.71 0.19 0.54 0.70 25.0
		20170729 08:30:00 Geo Vis 37.9 *** *** *** *** *** *** 0.40 *** 20170729 08:30:00 Geo NearIR 37.9 *** *** *** *** *** *** 0.10 *** 20170729 08:30:00 Geo IR 37.9 20.28 116.92 20.28 116.92 3.36 9.49 1.00 32.7
		20170729 06:59:05 SSMI-15 85-92GHz 40.0 18.53 117.09 18.43 116.97 0.30 0.84 0.50 20.0 20170729 05:59:56 AMSR2 85-92GHz 40.0 18.90 116.69 18.87 116.66 0.48 1.35 0.20 3.4 20170729 05:59:56 * AMSR2 37GHz 40.0 18.45 116.96 18.42 116.92 0.26 0.72 0.50 *** 20170729 05:36:39 GMI 85-92GHz 39.4 18.67 116.92 18.67 116.91 0.35 1.00 0.90 7.2 20170729 05:36:39 GMI 37GHz 39.4 *** *** *** *** *** *** 0.30 *** 20170729 05:30:00 Geo Vis 39.2 18.37 117.02 18.37 117.02 0.67 1.88 0.10 *** 20170729 05:30:00 Geo NearIR 39.2 *** *** *** *** *** *** 0.80 *** 20170729 05:30:00 Geo IR 39.2 *** *** *** *** *** *** 0.60 ***
		20170729 02:30:00 Geo Vis 34.2 18.32 116.78 18.32 116.78 0.57 1.62 0.10 *** 20170729 02:30:00 Geo NearIR 34.2 17.77 116.59 17.77 116.59 0.46 1.30 0.10 *** 20170729 02:30:00 Geo IR 34.2 18.24 116.20 18.24 116.20 1.55 4.37 0.60 57.9 20170729 02:06:00 * Metop-B ASCAT 33.5 18.10 116.41 18.12 116.44 0.13 0.36 *** *** 20170729 01:12:00 Metop-A ASCAT 32.0 *** *** *** *** *** *** *** ***
		20170728 23:30:00 Geo Vis 30.0 18.11 116.47 18.11 116.47 3.36 9.49 0.10 *** 20170728 23:30:00 Geo NearIR 30.0 18.36 116.42 18.36 116.42 1.42 4.02 0.80 *** 20170728 23:30:00 Geo IR 30.0 18.44 116.34 18.44 116.34 3.36 9.49 0.80 11.2 20170728 23:14:37 * SSMIS-18 85-92GHz 30.0 18.39 116.19 18.41 116.21 0.21 0.58 1.40 19.0 20170728 23:06:21 SSMIS-is 85-92GHz 30.0 18.38 116.29 18.41 116.31 0.24 0.67 1.40 10.0 20170728 23:06:21 SSMIS-17 85-92GHz 30.0 18.38 116.29 18.41 116.31 0.24 0.67 1.40 10.0
		20170728 20:30:00 Geo NearIR 30.0 18.29 116.37 18.29 116.37 0.34 0.95 0.90 *** 20170728 20:30:00 Geo IR 30.0 18.39 116.50 18.39 116.50 3.36 9.49 0.10 2.6 20170728 20:04:47 SSMIS-16 85-92GHz 30.0 18.07 116.24 18.10 116.26 0.31 0.87 2.60 6.4
		20170728 17:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.40 *** 20170728 17:30:00 Geo IR 30.0 *** *** *** *** *** *** 0.40 *** 20170728 17:28:27 AMSR2 85-92GHz 30.0 18.01 116.13 18.01 116.13 0.21 0.58 3.00 34.4 20170728 17:28:27 * AMSR2 37GHz 30.0 18.11 115.97 18.11 115.97 0.21 0.58 0.50 *** 20170728 16:16:39 GMI 85-92GHz 30.0 18.40 116.07 18.31 116.13 0.26 0.75 1.70 6.3 20170728 16:16:39 * GMI 37GHz 30.0 18.25 115.81 18.16 115.86 0.21 0.60 1.80 ***
		20170728 14:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.30 *** 20170728 14:30:00 Geo IR 30.0 *** *** *** *** *** *** 0.20 ***
		20170728 11:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.90 *** 20170728 11:30:00 Geo IR 30.0 *** *** *** *** *** *** 1.00 *** 20170728 10:40:35 SSMIS-18 85-92GHz 30.0 18.83 116.24 18.74 116.22 0.40 1.13 2.20 4.1 20170728 10:32:48 * SSMIS-17 85-92GHz 30.0 18.99 116.25 18.89 116.22 0.39 1.11 2.30 5.6
		20170728 08:30:00 Geo Vis 30.0 *** *** *** *** *** *** 0.30 *** 20170728 08:30:00 Geo NearIR 30.0 20.41 116.72 20.41 116.72 0.85 2.41 0.30 *** 20170728 08:30:00 Geo IR 30.0 20.73 116.69 20.73 116.69 1.01 2.86 0.50 41.7 20170728 07:31:08 * SSMIS-16 85-92GHz 30.0 18.95 116.51 18.85 116.43 0.32 0.92 1.80 7.3
		20170728 05:30:00 Geo Vis 30.0 *** *** *** *** *** *** 0.10 *** 20170728 05:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 0.50 *** 20170728 05:30:00 Geo IR 30.0 *** *** *** *** *** *** 0.10 *** 20170728 05:17:09 AMSR2 85-92GHz 30.0 19.42 116.67 19.40 116.65 0.38 1.07 1.70 4.4 20170728 05:17:09 * AMSR2 37GHz 30.0 19.37 116.51 19.35 116.49 0.20 0.58 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