market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 E025 C 193 92000 3014 12/4/97 09:00:52 92000 1 75 E026 B 193 59000 3014 12/4/97 09:00:52 59000 1 77 E032 B 193 71000 3014 12/4/97 09:00:52 71000 1 95