Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20151216T095125 ssmis18 12.2 41.1% 0.0 -0.0 n/a   25.0 kts
20151216T191919 ssmis16 123.4 NaN% NaN NaN n/a   25.0 kts
20151216T221737 ssmis19 34.5 21.9% 1.1 -1.1 n/a   25.0 kts
20151216T223100 ssmis18 45.6 39.7% 2.7 -2.7 n/a   25.0 kts
20151217T054207 ssmi15 23.4 9.6% 1.6 -1.6 n/a   25.0 kts
20151217T091726 ssmis19 201.2 11.0% 5.8 -5.8 n/a   25.0 kts
20151217T093404 ssmis17 201.2 12.3% 6.0 -6.0 n/a   25.0 kts
20151217T181947 ssmi15 12.2 0.0% 2.1 -2.1 n/a   25.0 kts
20151217T220403 ssmis19 256.8 6.8% 3.5 -3.5 n/a   25.0 kts
20151217T220404 ssmis19 256.8 6.8% 3.4 -3.4 n/a   25.0 kts
20151217T221848 ssmis18 112.3 13.7% 2.4 -2.4 n/a   25.0 kts
20151218T072408 ssmis16 123.4 9.6% 2.2 -2.2 n/a   22.6 kts
20151218T092042 ssmis17 134.5 20.6% 2.8 -2.8 n/a   21.0 kts
20151218T110744 ssmis18 67.8 21.9% 2.4 -2.4 n/a   20.1 kts
20151218T180428 ssmi15 34.5 54.8% 0.0 -0.0 n/a   20.0 kts
20151218T215136 ssmis19 234.6 NaN% NaN NaN n/a   20.0 kts
20151218T220041 ssmis17 267.9 25.0% 5.8 -5.8 n/a   20.0 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).