OBS-ID hhc20040831_1317 OBS-STRT 2004-08-31T07:17:02Z 2004-08-31T16:17:02+09:00 PERIOD 1 OBS-MODE 17 OBS-STOP 2004-08-31T07:39:32Z 2004-08-31T16:39:32+09:00 PERIOD 1 OBS-MODE 17 COMMENT