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
		20260727 15:04:54   GMI 37GHz 45 13.10 174.74 13.10 174.75 0.37 1.03 0.60 *** 20260727 15:04:54   GMI 89-92GHz 45 13.40 174.48 13.40 174.50 0.38 1.07 1.20 15
		20260727 11:30:00 * HIMAWARI9 IR 37 13.39 175.35 13.40 175.23 0.28 0.80 0.30 48 20260727 11:30:00   HIMAWARI9 SWIR 37 13.44 174.97 13.45 174.84 0.60 1.68 0.40 ***
		20260727 08:30:00   HIMAWARI9 IR 35 13.59 175.96 13.61 175.84 0.81 2.29 0.20 44 20260727 08:30:00   HIMAWARI9 SWIR 35 13.54 175.99 13.56 175.86 3.36 9.49 0.10 ***
		20260727 06:18:28   SSMIS-17 89-92GHz 33 13.32 176.49 13.31 176.57 0.40 1.14 0.10 5 20260727 05:30:00   HIMAWARI9 IR 32 13.41 176.47 13.46 176.33 2.61 7.38 0.10 4 20260727 05:30:00   HIMAWARI9 SWIR 32 12.09 177.54 12.14 177.41 2.16 6.10 1.00 ***
		20260727 04:01:38   SSMIS-18 89-92GHz 31 13.30 177.21 13.20 177.49 0.23 0.66 0.60 56 20260727 03:34:55 * GMI 37GHz 30 13.20 177.36 13.14 177.52 0.19 0.53 0.60 *** 20260727 03:34:55   GMI 89-92GHz 30 13.30 177.26 13.24 177.42 0.30 0.86 0.40 21 20260727 02:30:00   HIMAWARI9 IR 30 13.25 177.51 13.30 177.38 3.36 9.49 0.20 1 20260727 02:30:00   HIMAWARI9 SWIR 30 12.95 177.15 13.00 177.02 0.55 1.56 0.90 ***
		20260727 01:22:13   AMSR2 37GHz 30 13.10 177.98 12.96 178.34 0.38 1.07 0.30 *** 20260727 01:22:13   AMSR2 89-92GHz 30 13.15 177.98 13.01 178.34 0.30 0.84 0.50 46

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: ARCHER Track page