Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20110123T090029 tmi NaN 11.6% 4.6 -4.6 n/a   44.1 kts
20110123T152555 amsre NaN 74.0% 0.0 -0.0 n/a   45.0 kts
20110123T192950 ssmis17 NaN 0.0% 0.0 -0.0 n/a   45.0 kts
20110123T192956 ssmis17 -919.0 -999.0% -999.0 -909.0 n/a   45.0 kts
20110123T235407 tmi -919.0 -999.0% -999.0 -909.0 n/a   45.0 kts
20110124T033752 amsre NaN 58.9% 0.0 -0.0 n/a   42.8 kts
20110124T091246 ssmis18 NaN 18.5% 5.6 -5.6 n/a   36.4 kts
20110124T143117 amsre NaN 0.0% 6.2 -6.2 n/a   35.0 kts
20110124T225929 tmi NaN 0.0% 1.7 -1.7 n/a   35.0 kts
20110125T024212 amsre NaN 0.0% 3.3 -3.3 n/a   34.4 kts
20110125T071059 tmi 179.0 NaN% NaN NaN n/a   31.8 kts
20110125T184958 ssmis17 NaN 2.7% 2.3 -2.3 n/a   30.0 kts
20110125T200125 ssmis16 179.0 NaN% NaN NaN n/a   30.0 kts
20110125T220334 tmi NaN 12.3% 3.0 -3.0 n/a   30.0 kts
20110130T153314 amsre NaN 75.3% 0.0 -0.0 n/a   40.0 kts
20110130T192238 ssmis17 NaN 0.0% 6.9 -6.9 n/a   37.3 kts
20110130T203729 tmi 56.7 NaN% NaN NaN n/a   35.7 kts
20110130T205722 ssmis16 NaN 10.9% 6.1 -6.1 n/a   35.3 kts
20110130T223805 ssmis18 56.7 NaN% NaN NaN n/a   32.5 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.