market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 E025 C 192 77000 3060 12/3/97 17:00:35 77000 1 75 E026 B 192 49000 3060 12/3/97 17:00:35 49000 1 77 E032 B 192 59000 3060 12/3/97 17:00:35 59000 1 95