Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20111213T074241 ssmis16 23.4 58.9% 0.0 -0.0 n/a   27.1 kts
20111213T083211 ssmis16 45.6 26.0% 5.5 -5.5 n/a   28.0 kts
20111213T102059 ssmis18 12.2 42.5% 0.0 -0.0 n/a   29.5 kts
20111213T211305 ssmis16 256.8 9.6% 6.8 -6.8 n/a   30.0 kts
20111213T230202 ssmis18 5.0 0.0% 0.0 -0.0 n/a   30.0 kts
20111214T080828 ssmis17 323.5 NaN% NaN NaN n/a   35.0 kts
20111214T210018 ssmis16 12.2 0.0% 0.0 -0.0 n/a   32.5 kts
20111214T211100 ssmis17 34.5 NaN% NaN NaN n/a   32.3 kts
20111214T224108 ssmis18 56.7 16.4% 3.4 -3.4 n/a   30.6 kts
20111215T081824 ssmis17 5.0 57.5% 0.0 -0.0 n/a   37.4 kts
20111215T094857 ssmis16 34.5 NaN% NaN NaN n/a   38.9 kts
20111215T113850 ssmis18 56.7 23.3% 1.9 -1.9 n/a   40.0 kts
20111215T204829 ssmis17 45.6 61.6% 0.0 -0.0 n/a   42.3 kts
20111216T093617 ssmis16 23.4 100.0% 20.2 -35.2 n/a   48.2 kts
20111216T112703 ssmis18 78.9 26.0% 12.7 -12.7 n/a   49.9 kts
20111216T221550 ssmis16 45.6 49.3% 0.0 -0.0 n/a   53.0 kts
20111217T000646 ssmis18 NaN 57.5% 0.0 -920.0 n/a   55.0 kts
20111217T093439 ssmis17 45.6 17.8% 0.0 0.0 n/a   48.6 kts
20111217T220253 ssmis16 167.9 31.5% 1.1 -1.1 n/a   45.0 kts
20111217T220915 ssmis17 134.5 27.4% 2.3 -2.3 n/a   45.0 kts
20111218T092224 ssmis17 12.2 8.2% 0.0 -0.0 n/a   50.0 kts
20111218T105304 ssmis16 -919.0 -999.0% -999.0 -909.0 n/a   50.0 kts
20111218T120909 ssmis18 134.5 NaN% NaN NaN n/a   50.0 kts
20111218T220112 ssmis17 145.7 6.2% 3.6 -3.6 n/a   41.9 kts
20111219T104004 ssmis16 156.8 16.4% 2.5 -2.5 n/a   25.4 kts
20111219T123310 ssmis18 212.4 0.0% 3.4 -3.4 n/a   25.0 kts
20111219T231852 ssmis16 23.4 0.0% 0.0 -0.0 n/a   20.1 kts
20111220T011149 ssmis18 56.7 0.0% 2.3 -2.3 n/a   20.0 kts
20111220T102736 ssmis16 78.9 NaN% NaN NaN n/a   20.0 kts
20111220T103800 ssmis17 5.0 0.0% 0.9 -0.9 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.