condition mean min max ZT0-3 1262.85 1262.85 1262.85 ZT4-7 907.1 907.1 907.1 ZT8-11 884.15 884.15 884.15 ZT12-15 932.35 932.35 932.35 ZT16-19 1155.6999999999998 1155.6999999999998 1155.6999999999998 ZT20-23 1172.25 1172.25 1172.25