condition mean min max ZT0-3 37.10341 37.10341 37.10341 ZT4-7 25.740723000000003 25.740723000000003 25.740723000000003 ZT8-11 24.510813499999998 24.510813499999998 24.510813499999998 ZT12-15 37.090001 37.090001 37.090001 ZT16-19 20.685933499999997 20.685933499999997 20.685933499999997 ZT20-23 23.7366535 23.7366535 23.7366535