condition mean min max ZT0-3 21.83025 21.83025 21.83025 ZT4-7 16.579349999999998 16.579349999999998 16.579349999999998 ZT8-11 16.01135 16.01135 16.01135 ZT12-15 18.83455 18.83455 18.83455 ZT16-19 24.325400000000002 24.325400000000002 24.325400000000002 ZT20-23 25.929000000000002 25.929000000000002 25.929000000000002