Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20150207T012852 ssmis16 67.8 11.0% 4.6 -4.6 n/a   39.3 kts
20150207T041833 ssmis18 23.4 15.1% 6.5 -6.5 n/a   39.9 kts
20150207T135940 ssmis16 23.4 17.8% 0.0 -0.0 n/a   36.3 kts
20150207T164932 ssmis18 212.4 NaN% NaN NaN n/a   35.1 kts
20150208T011641 ssmis16 34.5 100.0% 21.8 -36.8 n/a   38.3 kts
20150208T031143 tmi 34.5 34.2% 10.4 -10.4 n/a   39.3 kts
20150208T032140 ssmis17 34.5 53.4% 11.1 -11.1 n/a   39.4 kts
20150208T034738 ssmis18 90.1 57.5% 11.8 -11.8 n/a   39.6 kts
20150208T080241 tmi 101.2 25.4% 7.2 -7.2 n/a   39.6 kts
20150208T134514 ssmis16 112.3 5.5% 6.4 -6.4 n/a   36.4 kts
20150208T154932 ssmis17 156.8 NaN% NaN NaN n/a   35.4 kts
20150208T163527 ssmis18 201.2 NaN% NaN NaN n/a   35.2 kts
20150209T010408 ssmis16 78.9 0.0% 0.9 -0.9 n/a   35.0 kts
20150209T030725 ssmis17 179.0 0.0% 7.2 -7.2 n/a   35.0 kts
20150209T033152 ssmis18 145.7 0.0% 3.5 -3.5 n/a   35.0 kts
20150209T051513 tmi 45.6 0.0% 3.1 -3.1 n/a   35.0 kts
20150209T065157 tmi 12.2 0.0% 1.5 -1.5 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).