OBS-ID hhc20010731_0850 OBS-STRT 2001-07-30_23:50:35UT 2001-07-31_08:50:35JST PERIOD 1 OBS-MODE 11 12 OBS-STOP 2001-07-31_03:53:02UT 2001-07-31_12:53:02JST PERIOD 1 OBS-MODE 11 12