condition mean min max ZT0-3 14.0655 13.987850000000002 14.14315 ZT4-7 12.188385 12.188385 12.188385 ZT8-11 38.2245 38.2245 38.2245 ZT12-15 0 0 0 ZT16-19 39.223749999999995 39.223749999999995 39.223749999999995 ZT20-23 33.9797 33.9797 33.9797