Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20130313T215006 ssmis18 112.3 39.7% 5.5 -5.5 n/a   41.1 kts
20130314T052757 ssmi15 5.0 65.8% 0.0 -0.0 n/a   49.6 kts
20130314T070726 ssmis16 212.4 NaN% NaN NaN n/a   50.7 kts
20130314T102628 ssmis18 179.0 21.9% 0.0 -0.0 n/a   52.6 kts
20130314T120016 tmi 12.2 57.5% 0.0 -0.0 n/a   53.4 kts
20130314T194141 ssmis17 23.4 54.8% 0.0 0.0 n/a   54.6 kts
20130314T201235 tmi 190.1 NaN% NaN NaN n/a   54.3 kts
20130314T213816 ssmis18 145.7 15.1% 0.5 0.5 n/a   53.2 kts
20130315T051132 ssmi15 145.7 20.6% 4.0 4.0 n/a   45.5 kts
20130315T065344 ssmis16 123.4 5.5% 1.9 1.9 n/a   44.5 kts
20130315T101353 ssmis18 34.5 60.3% 0.0 -0.0 n/a   43.0 kts
20130315T110533 tmi 34.5 12.3% 1.6 -1.6 n/a   42.6 kts
20130315T191218 ssmis17 NaN 49.3% 0.0 -920.0 n/a   39.5 kts
20130315T210953 ssmis18 12.2 65.8% 0.0 -0.0 n/a   38.4 kts
20130316T072949 ssmis17 12.2 45.2% 1.3 -1.3 n/a   35.0 kts
20130316T095856 ssmis18 12.2 8.2% 0.0 -0.0 n/a   35.0 kts
20130316T191637 ssmis17 34.5 67.1% 0.0 -0.0 n/a   35.0 kts
20130316T193056 ssmis16 123.4 NaN% NaN NaN n/a   35.0 kts
20130316T193448 ssmis16 123.4 NaN% NaN NaN n/a   35.0 kts
20130316T211238 ssmis18 12.2 69.9% 0.0 -0.0 n/a   35.0 kts
20130317T075017 ssmis17 212.4 0.0% 2.0 -2.0 n/a   34.7 kts
20130317T093200 ssmis18 179.0 0.0% 2.7 -2.7 n/a   34.0 kts
20130317T105241 tmi 212.4 0.0% 3.4 -3.4 n/a   33.2 kts
20130317T173239 ssmi15 45.6 57.5% 0.0 -0.0 n/a   30.0 kts
20130317T184203 ssmis17 167.9 8.2% 1.7 -1.7 n/a   30.0 kts
20130317T190356 tmi 190.1 5.5% 1.1 -1.1 n/a   30.0 kts
20130318T073720 ssmis17 212.4 0.0% 3.3 -3.3 n/a   25.0 kts
20130318T073840 ssmis17 212.4 0.0% 4.3 -4.3 n/a   25.0 kts
20130318T075533 ssmis16 212.4 0.0% 2.4 -2.4 n/a   25.0 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).