market freq_block bid_round bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 ME49 A 17 3600 1236 4/23/97 13:57:31 2340 9 1 ME51 A 22 1700 1236 4/23/97 13:57:31 1105 11 1 RE11 C 22 6300 1236 4/23/97 13:57:31 4095 13 21 RE11 D 20 6100 1236 4/23/97 13:57:31 3965 13 22