market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 E027 B 185 136000 3014 12/3/97 13:31:04 136000 1 80 E043 B 185 53000 3014 12/3/97 13:31:04 53000 1 128 E043 C 185 110000 3014 12/3/97 13:31:04 110000 1 129