condition mean min max ZT0-3 138.3145 125.986 150.643 ZT4-7 225.934 225.934 225.934 ZT8-11 89.5294 89.5294 89.5294 ZT12-15 0 0 0 ZT16-19 16.575400000000002 16.575400000000002 16.575400000000002 ZT20-23 65.15599999999999 65.15599999999999 65.15599999999999