market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 R352 A 24 242000 0320 1/17/97 12:19:23 242000 1 7 R534 A 24 161000 0317 1/17/97 12:25:12 161000 1 12 R718 A 24 388011 0323 1/17/97 12:18:19 388011 1 22