condition mean min max ZT0-3 42.95 42.95 42.95 ZT4-7 58.4 58.4 58.4 ZT8-11 11.85 11.85 11.85 ZT12-15 57.150000000000006 57.150000000000006 57.150000000000006 ZT16-19 50.05 50.05 50.05 ZT20-23 36.400000000000006 36.400000000000006 36.400000000000006