market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 ME09 B 21 118321 1212 4/23/97 09:08:59 118321 2 10 ME35 B 21 24024 1214 4/23/97 09:01:17 18018 5 10 ME51 B 21 1800 1227 4/23/97 09:05:25 1800 11 2 RE08 C 21 30009 1227 4/23/97 09:05:25 30009 13 15 RE09 D 21 3700 1227 4/23/97 09:05:25 3700 13 18 RE11 C 21 5800 1222 4/23/97 09:01:16 3770 13 21