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
		20170730 23:30:00 Geo Vis 20.6 *** *** *** *** *** *** 0.30 *** 20170730 23:30:00 Geo NearIR 20.6 28.33 118.19 28.33 118.19 3.36 9.49 0.70 *** 20170730 23:30:00 Geo IR 20.6 28.55 118.25 28.55 118.25 3.36 9.49 0.40 0.9 20170730 22:46:56 SSMIS-18 85-92GHz 21.5 28.58 117.70 28.68 117.68 0.63 1.77 0.90 0.0 20170730 22:37:01 * SSMIS-17 85-92GHz 21.7 28.60 117.88 28.73 117.85 0.60 1.69 0.20 0.1
		20170730 20:30:00 Geo NearIR 24.4 27.51 118.84 27.51 118.84 1.37 3.88 0.50 *** 20170730 20:30:00 Geo IR 24.4 *** *** *** *** *** *** 0.90 *** 20170730 19:12:47 SSMI-15 85-92GHz 26.0 *** *** *** *** *** *** 0.10 ***
		20170730 17:30:00 Geo NearIR 28.1 *** *** *** *** *** *** 0.20 *** 20170730 17:30:00 Geo IR 28.1 *** *** *** *** *** *** 0.80 ***
		20170730 14:30:00 Geo NearIR 31.9 *** *** *** *** *** *** 0.10 *** 20170730 14:30:00 Geo IR 31.9 *** *** *** *** *** *** 0.20 *** 20170730 13:45:00 Metop-A ASCAT 32.8 *** *** *** *** *** *** *** ***
		20170730 13:00:00 Metop-B ASCAT 33.8 *** *** *** *** *** *** *** *** 20170730 11:30:00 Geo NearIR 35.8 *** *** *** *** *** *** 0.60 *** 20170730 11:30:00 Geo IR 35.8 *** *** *** *** *** *** 1.00 *** 20170730 10:17:48 SSMIS-18 85-92GHz 37.8 *** *** *** *** *** *** 0.30 *** 20170730 10:08:24 SSMIS-17 85-92GHz 38.1 *** *** *** *** *** *** 0.20 ***
		20170730 08:30:00 Geo Vis 40.8 *** *** *** *** *** *** 0.10 *** 20170730 08:30:00 Geo NearIR 40.8 *** *** *** *** *** *** 0.10 *** 20170730 08:30:00 Geo IR 40.8 *** *** *** *** *** *** 0.40 ***
		20170730 05:30:00 Geo Vis 45.8 25.77 117.73 25.77 117.73 3.36 9.49 0.10 *** 20170730 05:30:00 Geo NearIR 45.8 25.57 118.06 25.57 118.06 0.58 1.64 0.60 *** 20170730 05:30:00 * Geo IR 45.8 25.65 117.98 25.65 117.98 0.39 1.11 0.60 48.3 20170730 05:06:48 AMSR2 85-92GHz 46.5 26.44 118.62 26.47 118.57 0.33 0.95 0.20 8.7 20170730 05:06:48 * AMSR2 37GHz 46.5 25.84 118.06 25.87 118.01 0.19 0.53 1.10 ***
		20170730 02:30:00 Geo Vis 50.0 25.65 118.41 25.65 118.41 2.17 6.13 0.30 *** 20170730 02:30:00 Geo NearIR 50.0 25.68 118.69 25.68 118.69 1.46 4.13 0.30 *** 20170730 02:30:00 Geo IR 50.0 25.75 118.52 25.75 118.52 2.52 7.13 0.10 22.4
		20170729 23:30:00 Geo Vis 50.8 *** *** *** *** *** *** 0.20 *** 20170729 23:30:00 Geo NearIR 50.8 25.67 119.37 25.67 119.37 1.05 2.96 0.10 *** 20170729 23:30:00 Geo IR 50.8 25.62 118.90 25.62 118.90 3.36 9.49 0.10 43.1 20170729 22:59:49 * SSMIS-18 85-92GHz 51.7 25.74 119.45 25.80 119.37 0.29 0.82 0.60 49.0 20170729 22:50:47 SSMIS-17 85-92GHz 51.9 *** *** *** *** *** *** 0.70 ***
		20170729 20:30:00 Geo NearIR 55.8 25.34 119.99 25.34 119.99 0.30 0.85 0.40 *** 20170729 20:30:00 Geo IR 55.8 25.34 119.93 25.34 119.93 0.37 1.03 0.40 77.4 20170729 19:49:27 SSMIS-16 85-92GHz 57.0 *** *** *** *** *** *** 1.20 ***
		20170729 18:09:20 AMSR2 85-92GHz 60.0 25.17 119.94 25.10 120.07 0.22 0.61 1.10 75.0 20170729 18:09:20 * AMSR2 37GHz 60.0 25.17 120.22 25.10 120.35 0.11 0.31 0.50 *** 20170729 17:30:00 Geo NearIR 60.8 24.90 120.51 24.90 120.51 0.25 0.71 0.40 *** 20170729 17:30:00 Geo IR 60.8 24.95 120.43 24.95 120.43 0.27 0.77 0.10 99.1
		20170729 15:26:40 * GMI 85-92GHz 64.3 24.98 120.59 24.89 120.83 0.24 0.69 0.50 23.7 20170729 15:26:40 GMI 37GHz 64.3 25.13 121.09 25.04 121.32 0.41 1.16 0.20 *** 20170729 14:30:00 Geo NearIR 65.8 *** *** *** *** *** *** 0.10 *** 20170729 14:30:00 Geo IR 65.8 24.49 120.89 24.49 120.89 0.88 2.49 0.20 3.9 20170729 13:18:00 Metop-B ASCAT 67.8 *** *** *** *** *** *** *** ***
		20170729 12:24:00 Metop-A ASCAT 70.0 *** *** *** *** *** *** *** *** 20170729 11:30:00 Geo NearIR 70.8 24.40 121.81 24.40 121.81 0.38 1.09 0.20 *** 20170729 11:30:00 Geo IR 70.8 24.43 121.70 24.43 121.70 0.54 1.52 0.20 35.4 20170729 10:29:27 SSMIS-18 85-92GHz 72.5 24.08 121.97 24.28 121.77 0.14 0.39 0.90 82.5 20170729 10:20:48 * SSMIS-17 85-92GHz 72.8 24.20 122.05 24.43 121.83 0.11 0.31 0.80 100.0
		20170729 08:30:00 Geo Vis 75.8 *** *** *** *** *** *** 0.60 *** 20170729 08:30:00 Geo NearIR 75.8 23.85 121.96 23.85 121.96 0.42 1.18 0.20 *** 20170729 08:30:00 Geo IR 75.8 24.15 122.29 24.15 122.29 0.36 1.00 0.10 68.2
		20170729 05:30:00 * Geo Vis 80.0 23.34 122.75 23.34 122.75 0.12 0.35 0.70 *** 20170729 05:30:00 Geo NearIR 80.0 23.39 122.75 23.39 122.75 2.41 6.82 0.20 *** 20170729 05:30:00 Geo IR 80.0 23.42 122.67 23.42 122.67 0.19 0.53 0.10 64.0
		20170729 02:30:00 Geo Vis 80.0 22.80 122.78 22.80 122.78 0.37 1.05 0.10 *** 20170729 02:30:00 Geo NearIR 80.0 22.42 122.86 22.42 122.86 0.65 1.84 0.40 *** 20170729 02:30:00 Geo IR 80.0 *** *** *** *** *** *** 0.10 *** 20170729 02:06:00 * Metop-B ASCAT 80.0 22.99 123.07 23.04 123.05 0.14 0.40 *** *** 20170729 01:12:00 * Metop-A ASCAT 80.0 23.06 123.17 23.22 123.09 0.15 0.44 *** ***
		20170728 23:30:00 Geo Vis 79.6 *** *** *** *** *** *** 0.10 *** 20170728 23:30:00 Geo NearIR 79.6 22.28 123.24 22.28 123.24 0.50 1.41 0.10 *** 20170728 23:30:00 Geo IR 79.6 22.53 123.16 22.53 123.16 0.24 0.68 0.10 47.0 20170728 23:05:08 SSMIS-is 85-92GHz 79.2 *** *** *** *** *** *** 3.00 *** 20170728 23:05:08 SSMIS-17 85-92GHz 79.2 *** *** *** *** *** *** 3.00 ***
		20170728 20:30:00 Geo NearIR 77.1 *** *** *** *** *** *** 0.20 *** 20170728 20:30:00 Geo IR 77.1 21.80 123.40 21.80 123.40 0.50 1.41 0.30 5.0 20170728 20:03:15 * SSMIS-16 85-92GHz 76.7 21.83 123.50 21.90 123.45 0.11 0.32 0.20 100.0
		20170728 17:30:00 Geo NearIR 74.6 21.74 124.11 21.74 124.11 0.61 1.71 0.20 *** 20170728 17:30:00 Geo IR 74.6 21.64 123.60 21.64 123.60 0.21 0.59 0.20 47.4 20170728 17:27:14 * AMSR2 85-92GHz 74.5 21.71 123.55 21.71 123.55 0.12 0.33 0.30 100.0 20170728 17:27:14 AMSR2 37GHz 74.5 21.71 123.66 21.71 123.65 0.18 0.51 0.20 ***
		20170728 14:30:00 Geo NearIR 72.1 21.30 124.53 21.30 124.53 1.15 3.24 0.10 *** 20170728 14:30:00 Geo IR 72.1 21.47 124.15 21.47 124.15 0.56 1.59 0.20 8.0
		20170728 12:45:00 Metop-A ASCAT 70.0 *** *** *** *** *** *** *** *** 20170728 11:30:00 Geo NearIR 68.7 20.52 125.04 20.52 125.04 0.97 2.75 0.10 *** 20170728 11:30:00 Geo IR 68.7 20.75 124.50 20.75 124.50 1.34 3.80 0.10 1.9
		20170728 08:30:00 Geo Vis 61.2 *** *** *** *** *** *** 0.20 *** 20170728 08:30:00 Geo NearIR 61.2 21.79 123.63 21.79 123.63 0.88 2.49 0.80 *** 20170728 08:30:00 Geo IR 61.2 21.02 124.57 21.02 124.57 0.66 1.87 0.10 12.6 20170728 07:31:13 * SSMIS-16 85-92GHz 58.8 20.62 125.15 20.75 125.00 0.26 0.74 0.40 66.0
		20170728 05:30:00 Geo Vis 55.0 *** *** *** *** *** *** 0.10 *** 20170728 05:30:00 Geo NearIR 55.0 20.10 125.04 20.10 125.04 0.57 1.62 0.60 *** 20170728 05:30:00 Geo IR 55.0 20.82 124.56 20.82 124.56 3.36 9.49 0.40 1.8 20170728 05:17:10 AMSR2 85-92GHz 55.0 20.43 125.43 20.45 125.41 0.15 0.41 0.20 100.0 20170728 05:17:10 AMSR2 37GHz 55.0 20.88 125.54 20.90 125.52 0.22 0.61 0.20 *** 20170728 04:56:40 * GMI 85-92GHz 55.0 20.44 125.26 20.50 125.20 0.10 0.29 0.40 100.0 20170728 04:56:40 GMI 37GHz 55.0 20.44 125.47 20.50 125.41 0.16 0.46 0.20 ***
		20170728 02:30:00 Geo Vis 55.0 19.70 125.46 19.70 125.46 2.08 5.89 0.40 *** 20170728 02:30:00 Geo NearIR 55.0 19.83 125.23 19.83 125.23 0.59 1.67 0.30 *** 20170728 02:30:00 Geo IR 55.0 19.80 125.36 19.80 125.36 0.42 1.18 0.20 8.0 20170728 01:33:00 Metop-A ASCAT 55.0 20.16 125.59 20.25 125.50 0.15 0.42 *** ***
		20170728 00:48:00 * Metop-B ASCAT 55.0 20.13 125.71 20.01 125.84 0.14 0.38 *** *** 20170727 23:30:00 Geo Vis 55.0 19.53 125.55 19.53 125.55 0.49 1.39 0.20 *** 20170727 23:30:00 Geo NearIR 55.0 19.68 125.63 19.68 125.63 0.37 1.06 0.30 *** 20170727 23:30:00 Geo IR 55.0 19.86 125.74 19.86 125.74 1.29 3.64 0.20 5.2
		20170727 21:45:05 SSMIS-18 85-92GHz 55.8 19.78 125.81 19.68 125.94 0.36 1.03 0.40 20.7 20170727 20:30:00 Geo NearIR 55.0 19.30 125.77 19.30 125.77 0.64 1.81 0.10 *** 20170727 20:30:00 Geo IR 55.0 19.80 125.40 19.80 125.40 0.66 1.88 0.60 10.3
		20170727 18:21:44 * SSMI-15 85-92GHz 55.0 19.29 126.68 19.19 126.75 0.26 0.75 0.90 56.5 20170727 17:30:00 Geo NearIR 55.0 *** *** *** *** *** *** 0.10 *** 20170727 17:30:00 Geo IR 55.0 *** *** *** *** *** *** 0.60 ***
		20170727 14:30:00 Geo NearIR 55.0 *** *** *** *** *** *** 0.10 *** 20170727 14:30:00 Geo IR 55.0 *** *** *** *** *** *** 0.40 *** 20170727 13:03:00 * Metop-A ASCAT 55.0 18.80 126.70 19.03 126.61 0.13 0.35 *** ***
		20170727 12:18:00 * Metop-B ASCAT 55.0 18.83 126.72 18.75 126.77 0.12 0.35 *** *** 20170727 11:30:00 Geo NearIR 55.0 *** *** *** *** *** *** 0.10 *** 20170727 11:30:00 Geo IR 55.0 *** *** *** *** *** *** 0.20 ***
		20170727 08:30:00 Geo Vis 55.0 *** *** *** *** *** *** 0.10 *** 20170727 08:30:00 Geo NearIR 55.0 *** *** *** *** *** *** 0.20 *** 20170727 08:30:00 Geo IR 55.0 *** *** *** *** *** *** 0.20 *** 20170727 07:43:44 SSMIS-16 85-92GHz 55.0 18.47 126.40 18.51 126.35 0.46 1.30 2.00 4.3
		20170727 05:49:41 SSMI-15 85-92GHz 55.0 18.18 126.84 18.16 126.86 0.30 0.84 1.10 24.1 20170727 05:30:00 Geo Vis 55.0 *** *** *** *** *** *** 0.10 *** 20170727 05:30:00 Geo NearIR 55.0 *** *** *** *** *** *** 0.40 *** 20170727 05:30:00 Geo IR 55.0 *** *** *** *** *** *** 0.30 *** 20170727 04:33:35 AMSR2 85-92GHz 55.0 18.22 126.91 18.30 126.86 0.27 0.77 1.70 36.6 20170727 04:33:35 * AMSR2 37GHz 55.0 18.12 127.17 18.20 127.12 0.13 0.36 0.60 ***
		20170727 02:30:00 Geo Vis 55.0 *** *** *** *** *** *** 0.50 *** 20170727 02:30:00 Geo NearIR 55.0 *** *** *** *** *** *** 1.00 *** 20170727 02:30:00 Geo IR 55.0 *** *** *** *** *** *** 0.40 ***
		20170726 23:30:00 Geo Vis 54.6 *** *** *** *** *** *** 0.10 *** 20170726 23:30:00 Geo NearIR 54.6 *** *** *** *** *** *** 0.90 *** 20170726 23:30:00 Geo IR 54.6 *** *** *** *** *** *** 0.20 ***
		20170726 21:58:16 * SSMIS-18 85-92GHz 53.3 17.78 126.85 17.72 126.87 0.33 0.94 1.60 10.1 20170726 21:51:49 SSMIS-17 85-92GHz 53.2 17.78 126.85 17.72 126.87 0.34 0.96 1.50 11.3 20170726 20:30:00 Geo NearIR 52.1 *** *** *** *** *** *** 0.40 *** 20170726 20:30:00 Geo IR 52.1 *** *** *** *** *** *** 0.90 ***
		20170726 18:38:06 * SSMI-15 85-92GHz 50.0 17.11 127.15 17.04 127.18 0.18 0.51 1.20 71.7 20170726 17:30:00 Geo NearIR 49.6 16.61 127.41 16.61 127.41 3.36 9.49 0.10 *** 20170726 17:30:00 Geo IR 49.6 *** *** *** *** *** *** 0.50 *** 20170726 16:31:40 GMI 85-92GHz 48.8 17.15 127.40 17.20 127.36 0.32 0.92 1.50 16.1 20170726 16:31:40 * GMI 37GHz 48.8 17.10 127.77 17.15 127.73 0.17 0.48 0.30 ***
		20170726 14:30:00 Geo NearIR 47.1 16.73 127.46 16.73 127.46 0.54 1.52 0.20 *** 20170726 14:30:00 Geo IR 47.1 *** *** *** *** *** *** 1.00 ***
		20170726 11:30:00 Geo NearIR 45.0 *** *** *** *** *** *** 0.20 *** 20170726 11:30:00 Geo IR 45.0 17.47 129.11 17.47 129.11 3.36 9.49 0.20 13.4
		20170726 09:23:27 SSMIS-18 85-92GHz 45.0 16.79 128.08 16.65 128.11 0.38 1.07 3.00 7.6 20170726 09:17:28 * SSMIS-17 85-92GHz 45.0 16.38 129.13 16.25 129.15 0.25 0.69 2.10 13.6 20170726 08:30:00 Geo Vis 45.0 *** *** *** *** *** *** 0.30 *** 20170726 08:30:00 Geo NearIR 45.0 16.52 129.53 16.52 129.53 0.72 2.04 0.30 *** 20170726 08:30:00 Geo IR 45.0 17.00 129.53 17.00 129.53 3.36 9.49 0.10 13.8
		20170726 06:04:53 * SSMI-15 85-92GHz 45.0 16.91 127.94 16.86 127.96 0.27 0.77 2.10 22.4 20170726 05:30:00 Geo Vis 43.7 *** *** *** *** *** *** 0.40 *** 20170726 05:30:00 Geo NearIR 43.7 15.48 128.18 15.48 128.18 3.36 9.49 0.10 *** 20170726 05:30:00 Geo IR 43.7 *** *** *** *** *** *** 0.10 *** 20170726 05:01:40 GMI 85-92GHz 42.6 *** *** *** *** *** *** 3.00 *** 20170726 05:01:40 GMI 37GHz 42.6 *** *** *** *** *** *** 3.00 ***
		20170726 02:30:00 * Geo Vis 36.2 15.16 129.88 15.16 129.88 0.76 2.15 0.10 *** 20170726 02:30:00 Geo NearIR 36.2 15.34 128.42 15.34 128.42 3.36 9.49 0.40 *** 20170726 02:30:00 Geo IR 36.2 *** *** *** *** *** *** 0.40 ***
		20170725 23:30:00 Geo Vis 30.0 *** *** *** *** *** *** 0.30 *** 20170725 23:30:00 Geo NearIR 30.0 *** *** *** *** *** *** 1.00 *** 20170725 23:30:00 Geo IR 30.0 *** *** *** *** *** *** 0.80 ***

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