Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20130101T140908 ssmis16 123.4 74.0% 0.0 -0.0 n/a   45.0 kts
20130101T155621 tmi 56.7 26.0% 9.5 -9.5 n/a   45.0 kts
20130101T164218 ssmis18 56.7 90.4% 16.6 -31.6 n/a   45.0 kts
20130101T234125 ssmi15 145.7 9.6% 0.0 -0.0 n/a   48.4 kts
20130102T011701 ssmis16 45.6 57.5% 0.0 -0.0 n/a   50.1 kts
20130102T035318 ssmis18 145.7 53.4% 3.4 -3.4 n/a   53.0 kts
20130102T064819 tmi 112.3 17.8% 9.4 9.4 n/a   55.7 kts
20130102T121544 ssmi15 67.8 2.7% 12.7 12.7 n/a   61.5 kts
20130102T133320 ssmis17 212.4 NaN% NaN NaN n/a   62.8 kts
20130102T135512 ssmis16 12.2 26.0% 1.5 1.5 n/a   63.1 kts
20130102T150026 tmi 78.9 23.3% 14.7 14.7 n/a   63.9 kts
20130102T162916 ssmis18 67.8 100.0% 21.2 36.2 >65 kts   64.7 kts
20130102T162920 ssmis18 67.8 100.0% 24.3 39.3 >65 kts   64.7 kts
20130102T232731 ssmi15 112.3 65.2% 20.0 20.0 n/a   65.0 kts
20130103T010236 ssmis16 56.7 NaN% NaN NaN n/a   65.0 kts
20130103T115840 ssmi15 90.1 54.8% 10.6 10.6 n/a   65.0 kts
20130103T134106 ssmis16 78.9 100.0% 44.6 59.6 >65 kts   65.0 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).