OBS-ID hhc20030331_0838 OBS-STRT 2003-03-30T23:38:51Z 2003-03-31T08:38:51+09:00 PERIOD 1 OBS-MODE 11 12 13 14 15 OBS-STRT 2003-03-31T07:48:39Z 2003-03-31T16:48:39+09:00 PERIOD 2 OBS-MODE 11 12 13 14 15 OBS-STOP 2003-03-31T07:50:06Z 2003-03-31T16:50:06+09:00 PERIOD 2 OBS-MODE 11 12 13 14 15