Note added December 22, 2004: It was discovered in the release of version 1 segments that there were an error in the original online segment list generation Subsequent investigation uncovered a second error. 1) H1 segment 8 H1 segment 8 was originally defined to be 8 784869116 784870325 1209 but should have been defined to be 8 784869028 784870325 1297 So 88 seconds of valid science mode data are missing from the official DQ segments which are based on the original list. We have decided, for the sake of avoiding confusion, not to redefine segment 8. Analysts are free, of course, to look at those 88 seconds if desired. 2) H2 segment 2 H2 segment 2 was originally defined to be 2 784711702 784732832 21130 but should have been defined to be 2 784711702 784732648 20946 So 184 seconds of invalid (unlocked!) data was identified originally as being science mode. Again, to avoid confusion, the segment has not been redefined, but a data quality flag (UNLOCKED) has been set in version 1 for the interval 784732647-784732832. The problem that led to these two errors in the original online generation has been fixed.