market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 B028 F 260 3971200 2671 1/10/97 09:12:44 3375520 2 12 B028 F 260 3971000 2627 1/10/97 09:06:40 2978250 2 12 B406 D 260 2009000 2751 1/10/97 09:08:27 2009000 2 13 B405 D 260 519000 2751 1/10/97 09:08:27 519000 2 16 B397 E 260 1088000 2751 1/10/97 09:08:27 1088000 4 23 B228 F 260 138000 2768 1/10/97 09:09:30 103500 42 15