Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20111204T134514 ssmis16 5.0 0.0% 0.0 -0.0 n/a   35.0 kts
20111204T152758 ssmis18 156.8 NaN% NaN NaN n/a   35.0 kts
20111205T005718 ssmis16 134.5 1.4% 3.9 -3.9 n/a   35.0 kts
20111205T133212 ssmis16 5.0 31.5% 0.0 -0.0 n/a   35.0 kts
20111205T133226 ssmis16 212.4 NaN% NaN NaN n/a   35.0 kts
20111205T145250 ssmis18 NaN 91.8% 0.0 -920.0 n/a   35.0 kts
20111206T005554 ssmis17 34.5 89.0% 5.4 -20.4 n/a   35.0 kts
20111206T131926 ssmis16 NaN 0.0% 0.0 -920.0 n/a   35.0 kts
20111206T131927 ssmis16 212.4 NaN% NaN NaN n/a   35.0 kts
20111206T133043 ssmis17 190.1 12.3% 6.9 -6.9 n/a   35.0 kts
20111207T002724 ssmis17 12.2 39.7% 0.0 -0.0 n/a   32.2 kts
20111207T002738 ssmis17 12.2 24.7% 0.0 -0.0 n/a   32.2 kts
20111207T035743 ssmis18 156.8 NaN% NaN NaN n/a   30.4 kts
20111207T035808 ssmis18 156.8 NaN% NaN NaN n/a   30.4 kts
20111207T120754 ssmis17 145.7 24.7% 3.3 -3.3 n/a   30.0 kts
20111207T131811 ssmis17 179.0 0.0% 5.2 -5.2 n/a   30.0 kts
20111208T020023 ssmis16 212.4 20.6% 2.8 -2.8 n/a   27.5 kts
20111208T032548 ssmis18 12.2 68.5% 0.0 -0.0 n/a   26.6 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.