market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 R352 A 6 150000 0317 1/14/97 12:19:45 150000 1 7 R530 A 6 27011 0323 1/14/97 12:26:27 27011 1 10 R534 A 6 26000 0320 1/14/97 12:19:55 26000 1 12 R608 B 6 27022 0322 1/14/97 12:19:16 27022 1 18 R718 A 6 27011 0323 1/14/97 12:26:27 27011 1 22