Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20170923T090738 amsr2_85 77.7 161.8 NaN% NaN NaN n/a   30.0 kts
20170923T200043 amsr2_85 155.4 6.1 0.0% 3.7 -3.7 n/a   31.7 kts
20170924T005832 ssmis17_85 133.2 61.7 13.0% 2.1 -2.1 n/a   35.8 kts
20170924T104244 ssmis16_85 122.1 6.1 NaN% NaN NaN n/a   40.0 kts
20170924T133145 ssmis17_85 299.7 145.1 NaN% NaN NaN n/a   38.7 kts
20170924T142640 gmi_85 111.0 17.2 17.8% 4.3 -4.3 n/a   38.0 kts
20170924T204418 amsr2_85 144.3 56.1 20.0% 5.2 -5.2 n/a   35.0 kts
20170925T014410 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   35.0 kts
20170925T034639 gmi_85 111.0 50.6 NaN% NaN NaN n/a   35.0 kts
20170925T085358 amsr2_85 55.5 33.9 NaN% NaN NaN n/a   32.6 kts
20170925T133639 gmi_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20170925T141557 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20170926T013206 ssmis18_85 55.5 22.8 0.0% 3.6 -3.6 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).