Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20170127T054311 amsr2_85 323.5 NaN% NaN NaN n/a   35.0 kts
20170127T092139 gmi_85 323.5 NaN% NaN NaN n/a   35.0 kts
20170127T101925 ssmis17_85 312.4 NaN% NaN NaN n/a   35.0 kts
20170127T111202 ssmis18_85 279.1 NaN% NaN NaN n/a   35.0 kts
20170127T222611 ssmis18_85 245.7 NaN% NaN NaN n/a   43.7 kts
20170127T223639 gmi_85 190.1 5.6% 4.8 -4.8 n/a   43.8 kts
20170128T062547 amsr2_85 78.9 0.0% 5.0 -5.0 n/a   44.6 kts
20170128T105917 ssmis18_85 145.7 13.7% 2.4 -2.4 n/a   40.8 kts
20170128T191733 ssmi15_85 323.5 NaN% NaN NaN n/a   38.9 kts
20170128T230053 ssmis17_85 167.9 16.4% 1.5 -1.5 n/a   35.8 kts
20170129T113358 ssmis17_85 201.2 0.0% 2.7 -2.7 n/a   28.6 kts
20170129T180246 amsr2_85 245.7 0.0% 2.7 -2.7 n/a   25.0 kts
20170129T190132 ssmi15_85 234.6 0.0% 2.9 -2.9 n/a   25.0 kts
20170129T204851 ssmis16_85 212.4 0.0% 1.5 -1.5 n/a   25.0 kts
20170129T222640 gmi_85 267.9 NaN% NaN NaN n/a   25.0 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).