market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 E035 C 227 782000 3014 12/8/97 10:02:38 782000 1 105 E036 B 227 664000 3014 12/8/97 10:02:38 664000 1 107 E039 B 227 780000 3014 12/8/97 10:02:38 780000 1 116