market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 B008 B 126 1861000 3399 3/24/98 15:48:09 1023550 39 2 B448 B 126 1600000 3399 3/24/98 15:48:09 880000 48 2