market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 E035 C 228 938000 3060 12/8/97 10:30:33 938000 1 105 E036 B 228 797000 3060 12/8/97 10:30:33 797000 1 107 E039 B 228 936000 3060 12/8/97 10:30:33 936000 1 116