market freq_block bid_round bid_amt bidder_num date time net_bid_amt min_accept num_of_bids sort_col_1 sort_col_2 N001 6 16000000 0251 4/1/97 11:31:48 16000000 18400000 2 1 1 N002 5 13437661 0250 4/1/97 11:11:55 13437661 15453000 0 1 2