market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 B019 B 106 20000 3407 3/20/98 15:35:09 15000 41 8 B045 B 106 29000 3285 3/20/98 15:31:51 29000 12 22 B144 B 106 122000 3380 3/20/98 15:30:39 67100 27 12 B380 B 106 167000 3394 3/20/98 15:34:32 91850 3 8 B397 B 106 226000 3365 3/20/98 15:32:12 169500 4 16 B476 B 106 25000 3373 3/20/98 15:33:33 16250 12 46