bid_type	market	freq_block	round_num	bid_amt	bidder_num	date	time
W	M047	A	57	15000	1009	2/22/96	11:18:00
W	M047	F	57	3200	1041	2/22/96	11:27:00
W	M047	H	57	3500	1041	2/22/96	11:27:00