Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
19970910T002506 ssmi13_85 90.1 5.5% 6.4 -6.4 n/a   35.3 kts
19970910T033845 ssmi14_85 123.4 16.4% 3.4 -3.4 n/a   38.0 kts
19970910T130150 ssmi13_85 101.2 11.0% 1.7 -1.7 n/a   50.9 kts
19970910T141157 ssmi11_85 90.1 9.6% 4.4 -4.4 n/a   51.8 kts
19970910T171819 ssmi10_85 101.2 NaN% NaN NaN n/a   54.4 kts
19970911T032705 ssmi14_85 34.5 49.3% 14.5 14.5 n/a   73.6 kts
19970911T124911 ssmi13_85 23.4 100.0% 33.9 48.9 >65 kts   103.4 kts
19970911T160228 ssmi14_85 23.4 100.0% 39.3 54.3 >65 kts   116.8 kts
19970912T031507 ssmi14_85 5.0 100.0% 18.3 33.3 >65 kts   157.7 kts
19970912T052754 ssmi10_85 5.0 100.0% 22.0 37.0 >65 kts   159.6 kts
19970912T154939 ssmi14_85 5.0 100.0% 20.9 35.9 >65 kts   151.8 kts
19970912T175337 ssmi10_85 5.0 93.2% 9.4 24.4 >65 kts   150.1 kts
19970913T023836 ssmi11_85 5.0 86.3% 18.9 33.9 >65 kts   145.0 kts
19970913T140508 ssmi13_85 112.3 NaN% NaN NaN n/a   138.3 kts
19970913T151113 ssmi11_85 101.2 100.0% 44.0 59.0 >65 kts   137.3 kts
19970914T012004 ssmi13_85 323.5 NaN% NaN NaN n/a   121.7 kts
19970914T043259 ssmi14_85 112.3 NaN% NaN NaN n/a   113.6 kts
19970914T060620 ssmi10_85 112.3 100.0% 30.8 45.8 >65 kts   109.7 kts
19970914T135246 ssmi13_85 156.8 12.7% 1.4 1.4 n/a   90.3 kts
19970914T145724 ssmi11_85 78.9 0.0% 8.3 8.3 n/a   87.6 kts
19970914T170522 ssmi14_85 78.9 8.2% 4.5 4.5 n/a   82.3 kts
19970914T182850 ssmi10_85 67.8 0.0% 3.5 3.5 n/a   79.6 kts
19970915T042110 ssmi14_85 323.5 NaN% NaN NaN n/a   67.7 kts
19970915T165255 ssmi14_85 323.5 NaN% NaN NaN n/a   50.9 kts
19970916T161151 ssmi11_85 56.7 0.0% 1.4 -1.4 n/a   35.0 kts
19970916T190454 ssmi10_85 267.9 NaN% NaN NaN n/a   35.0 kts
19970917T022536 ssmi13_85 323.5 NaN% NaN NaN n/a   33.0 kts
19970917T145714 ssmi13_85 323.5 NaN% NaN NaN n/a   30.0 kts
19970917T155817 ssmi11_85 290.2 NaN% NaN NaN n/a   30.0 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).