Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20110317T121634 ssmis17 NaN 58.9% 4.0 -4.0 n/a   37.6 kts
20110317T133258 ssmis16 NaN 6.8% 0.0 -0.0 n/a   38.1 kts
20110317T154436 ssmis18 NaN 50.7% 0.1 -0.1 n/a   39.1 kts
20110317T204110 amsre 23.4 52.0% 16.3 -16.3 n/a   41.3 kts
20110318T025649 ssmis18 NaN 42.5% 7.0 -7.0 n/a   44.4 kts
20110318T085404 amsre NaN 16.4% 3.3 -3.3 n/a   44.3 kts
20110318T152913 ssmis18 NaN 27.4% 0.0 -0.0 n/a   40.6 kts
20110319T005709 ssmis17 134.5 26.0% 11.8 -11.8 n/a   43.1 kts
20110319T015631 tmi NaN 6.8% 9.6 -9.6 n/a   43.7 kts
20110319T021345 ssmis16 NaN 4.1% 8.4 -8.4 n/a   43.8 kts
20110319T093622 amsre NaN 20.6% 2.4 -2.4 n/a   42.8 kts
20110319T100752 tmi NaN 35.6% 3.5 -3.5 n/a   42.3 kts
20110319T133110 ssmis17 NaN 0.0% 0.3 -0.3 n/a   38.1 kts
20110319T144740 ssmis16 NaN 65.8% 0.5 -0.5 n/a   36.8 kts
20110320T004532 ssmis17 NaN 75.3% 0.0 -920.0 n/a   34.0 kts
20110320T020150 ssmis16 212.4 NaN% NaN NaN n/a   33.3 kts
20110320T023826 tmi 5.0 90.4% 0.0 -15.0 n/a   32.9 kts
20110320T041529 ssmis18 NaN 12.3% 2.7 -2.7 n/a   31.6 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.