Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20130103T194004 ssmi15 101.2 9.6% 7.8 -7.8 n/a   31.7 kts
20130103T211028 ssmis16 134.5 23.3% 5.3 -5.3 n/a   33.3 kts
20130103T234622 ssmis18 78.9 20.6% 0.0 -0.0 n/a   35.0 kts
20130104T094325 ssmis16 12.2 4.1% 1.1 -1.1 n/a   35.0 kts
20130104T095916 ssmis17 45.6 11.0% 3.0 -3.0 n/a   35.0 kts
20130104T124745 ssmis18 78.9 0.0% 3.2 -3.2 n/a   35.0 kts
20130104T231749 tmi 234.6 NaN% NaN NaN n/a   39.8 kts
20130105T081141 ssmi15 179.0 NaN% NaN NaN n/a   41.5 kts
20130105T092339 ssmis16 290.2 NaN% NaN NaN n/a   43.0 kts
20130105T093738 ssmis17 267.9 NaN% NaN NaN n/a   43.3 kts
20130105T122941 tmi 12.2 39.7% 0.0 -0.0 n/a   45.0 kts
20130105T123514 ssmis18 134.5 13.4% 2.1 -2.1 n/a   45.0 kts
20130105T221830 ssmis17 267.9 NaN% NaN NaN n/a   45.0 kts
20130105T222207 tmi 223.5 NaN% NaN NaN n/a   45.0 kts
20130105T223238 ssmis16 223.5 9.6% 9.2 -9.2 n/a   45.0 kts
20130106T010232 ssmis18 145.7 13.7% 2.6 -2.6 n/a   44.6 kts
20130106T075616 ssmi15 223.5 9.6% 1.4 -1.4 n/a   40.0 kts
20130106T091600 ssmis16 123.4 23.3% 4.1 -4.1 n/a   40.0 kts
20130106T113411 tmi 34.5 28.8% 3.1 -3.1 n/a   40.0 kts
20130106T122304 ssmis18 323.5 NaN% NaN NaN n/a   40.0 kts
20130106T203442 ssmi15 167.9 20.6% 6.8 -6.8 n/a   40.0 kts
20130106T215302 ssmis17 56.7 32.9% 8.7 -8.7 n/a   40.0 kts
20130106T222645 ssmis16 167.9 NaN% NaN NaN n/a   40.0 kts
20130107T005323 ssmis18 179.0 60.3% 4.9 -4.9 n/a   39.8 kts
20130107T201926 ssmi15 112.3 12.3% 2.6 -2.6 n/a   30.0 kts
20130107T220305 ssmis16 67.8 12.3% 0.0 -0.0 n/a   29.8 kts
20130107T220838 tmi 134.5 34.2% 7.8 -7.8 n/a   29.8 kts
20130108T005201 ssmis18 78.9 41.1% 6.0 -6.0 n/a   28.0 kts
20130108T101743 ssmis17 145.7 NaN% NaN NaN n/a   25.0 kts
20130108T200400 ssmi15 223.5 NaN% NaN NaN n/a   24.8 kts
20130108T211329 tmi 101.2 NaN% NaN NaN n/a   24.5 kts
20130108T220156 ssmis16 190.1 NaN% NaN NaN n/a   24.2 kts
20130109T004003 ssmis18 145.7 NaN% NaN NaN n/a   23.1 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).