condition mean min max ZT0-3 40.0 40.0 40.0 ZT4-7 42.3 42.3 42.3 ZT8-11 14.15 14.15 14.15 ZT12-15 21.4 21.4 21.4 ZT16-19 34.35 34.35 34.35 ZT20-23 14.100000000000001 14.100000000000001 14.100000000000001