condition mean min max ZT0-3 131.9136 99.2798 193.3965 ZT4-7 149.162 149.162 149.162 ZT8-11 94.60805 94.60805 94.60805 ZT12-15 44.171625 42.89255 45.4507 ZT16-19 29.681350000000002 29.681350000000002 29.681350000000002 ZT20-23 32.8519 32.8519 32.8519