market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 E025 C 191 64000 3014 12/3/97 16:31:08 64000 1 75 E026 B 191 41000 3014 12/3/97 16:31:08 41000 1 77 E032 B 191 49000 3014 12/3/97 16:31:08 49000 1 95