condition mean min max ZT0-3 6729.75 6729.75 6729.75 ZT4-7 6685.9 6685.9 6685.9 ZT8-11 5967.4 5967.4 5967.4 ZT12-15 5262.7 5262.7 5262.7 ZT16-19 5286.7 5286.7 5286.7 ZT20-23 5849.950000000001 5849.950000000001 5849.950000000001