condition mean min max ZT0-3 57.400000000000006 57.400000000000006 57.400000000000006 ZT4-7 99.2 99.2 99.2 ZT8-11 73.39999999999999 73.39999999999999 73.39999999999999 ZT12-15 102.55000000000001 102.55000000000001 102.55000000000001 ZT16-19 36.05 36.05 36.05 ZT20-23 54.45 54.45 54.45