Flight Name FID centers passes pres start time end time FRAN96_29U3 960829U3 5 9 850 1241Z 29AUG 2236Z 29AUG FRAN96_30U3 960830U3 5 10 850 0401Z 30AUG 1321Z 30AUG FRAN96_30U4 960830U4 4 8 850 1558Z 30AUG 0024Z 31AUG FRAN96_31U3 960831U3 5 10 850 0346Z 31AUG 1237Z 31AUG FRAN96_31U4 960831U4 4 8 850 1601Z 31AUG 0002Z 01SEP FRAN96_01U3 960901U3 4 8 850 0334Z 01SEP 1210Z 01SEP FRAN96_01U4 960901U4 3 6 850 1520Z 01SEP 2251Z 01SEP FRAN96_02U3 960902U3 3 6 850 0421Z 02SEP 1230Z 02SEP FRAN96_02U4 960902U4 3 6 850 1521Z 02SEP 2146Z 02SEP FRAN96_03U1 960903U1 4 8 700 0248Z 03SEP 1246Z 03SEP FRAN96_03U2 960903U2 5 10 700 1501Z 03SEP 0215Z 04SEP FRAN96_04U1 960904U1 4 8 700 1118Z 04SEP 2149Z 04SEP FRAN96_04U3 960904U3 3 6 700 2225Z 04SEP 0652Z 05SEP FRAN96_05U1 960905U1 4 8 700 0627Z 05SEP 1542Z 05SEP FRAN96_05U2 960905U2 7 14 700 1542Z 05SEP 0442Z 06SEP FRAN96_05I1 1710Z 05SEP 0154Z 06SEP _05I1A 960905I1A 2 4 850 _05I1B 960905I1B 2 4 400 FRAN96_05H1 1953Z 05SEP 0550Z 06SEP _05H1A 960905H1A 3 6 850 _05H1B 960905H1B 3 4 600 Totals 73 143 The 05H1B flight should be used with great circumspection - all the centers were over land, meaning a large part of each profile was, as well. The isobaric height values are all unreliable, because the radar altitude values (which go into creating isob ht.) are wrong, to some degree. I have included the 05H1B data in the archive, just in case someone really, absolutely has to use it - but you're better off not doing so. And if you do, approach the subject with fear and trembling. The flight names appear a trifle strange because FRAN96 overlapped EDOUARD96, and on several days the Air Force was flying both storms. The flights for EDOUARD have arbitrarily been assigned the lower numbered FIDs, even if a FRAN flight may have been flown earlier in the day. The flight names always match the FIDs, so this peculiarity has been carried over into them. The 05I1 and 05H1 flights both had altitude changes while the planes were on station, so each had to be divided into 2 logical flights for processing. Center at 850mb from SCAN of FRAN96_03U1: 05:10:51Z = 18651 sec., 24.433, -70.187, WILF = -1881 Center at 700mb from SCAN of FRAN96_04U2: 23:12:40 = 83560 sec., 28.503, -76.043, WILF = -5051 Global tracks and the flights processed using them: 850MB1: 29U3 30U3 30U4 850MB2: 31U3 31U4 01U3 850MB3: 01U4 02U3 02U4 850MB4: 05I1A 05H1A 700MB1: 03U1 03U2 700MB2: 04U1 04U3 700MB3: 05U1 05U2 600MB: 05H1B 400MB: 05I1B