Table:
text: SM-65B Atlas
Launch history
Launch history
Date_ Time_GMT_ Serial Apogee Outcome
1958-07-19 17:36 3B kilometres (mi) Failure.[ citation needed ]
1958-08-02 22:16 4B kilometres (mi) Success
1958-08-29 04:30 5B kilometres (mi) Success
1958-09-14 05:24 8B kilometres (mi) Success
1958-09-18 21:27 6B kilometres (mi) Failure.
1958-11-18 04:00 9B kilometres (mi) Partial failure.
1958-11-29 02:27 12B kilometres (mi) Success
1958-12-18 22:02 10B N/A Success
1959-01-16 04:00 13B kilometres (mi) Failure.
1959-02-04 08:01 11B kilometres (mi) Success[ citation needed ]

Question: What is the datum for the SM-65B Atlas 10b series?