market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 E084 B 210 34000 3060 12/5/97 09:30:29 34000 1 251 E088 C 210 44000 3060 12/5/97 09:30:29 44000 1 264 E089 C 210 50000 3060 12/5/97 09:30:29 50000 1 267