Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20170220T172442 ssmis18_85 323.5 NaN% NaN NaN n/a   35.0 kts
20170220T175153 ssmis17_85 323.5 NaN% NaN NaN n/a   35.0 kts
20170221T004042 amsr2_85 123.4 12.3% 0.8 -0.8 n/a   35.3 kts
20170221T013936 ssmi15_85 123.4 8.2% 1.0 -1.0 n/a   35.7 kts
20170221T024941 ssmis16_85 279.1 NaN% NaN NaN n/a   36.2 kts
20170221T055747 ssmis18_85 90.1 8.2% 0.0 -0.0 n/a   37.5 kts
20170221T103140 gmi_85 323.5 NaN% NaN NaN n/a   39.4 kts
20170221T125238 ssmi15_85 323.5 NaN% NaN NaN n/a   39.6 kts
20170221T140414 ssmis16_85 323.5 NaN% NaN NaN n/a   39.1 kts
20170221T171254 ssmis18_85 323.5 NaN% NaN NaN n/a   37.8 kts
20170221T202139 gmi_85 323.5 NaN% NaN NaN n/a   36.5 kts
20170222T012151 ssmi15_85 67.8 0.0% 2.1 -2.1 n/a   35.0 kts
20170222T023429 ssmis16_85 78.9 0.0% 0.0 -0.0 n/a   35.0 kts
20170222T054322 ssmis18_85 312.4 NaN% NaN NaN n/a   35.0 kts
20170222T094139 gmi_85 323.5 NaN% NaN NaN n/a   35.0 kts
20170222T123811 ssmi15_85 156.8 0.0% 1.8 -1.8 n/a   35.0 kts
20170222T135233 ssmis16_85 190.1 NaN% NaN NaN n/a   35.0 kts
20170222T154645 ssmis17_85 312.4 NaN% NaN NaN n/a   35.0 kts

Key:

Diameter values indicate the estimated surface eyewall diameter (the MI eyewall edge diameter minus 10 km).

Diameter values are red if Ring % <= 65, yellow/brown if Ring % <= 85 and green if Ring % > 85.

"Ring %" is the percentage of the "ring" (eyewall inner boundary) that is 1) colder than the "hot spot" (warmest eye pixel) in the eye by 20K, or 2) the percentage that is a) colder than 232K and b) colder than the "hot spot" by 10K, whichever is greater.

"Tb diff" is the difference between the "hot spot" (warmest eye pixel) and the warmest pixel on the eyewall.

Scores are listed as negative, and not used, when the JTWC or NHC estimated Vmax is <50 kts in order to rule out weak but highly symmetric TCs.

Error messages in intensity scores: -920 is used when the hottest pixel in the eye is <200K, to prevent false positives; -909 is a failure to process (bad input data).