condition mean min max ZT0-3 110.1563 98.2816 122.031 ZT4-7 136.2965 136.2965 136.2965 ZT8-11 104.41999999999999 104.41999999999999 104.41999999999999 ZT12-15 0 0 0 ZT16-19 119.74449999999999 119.74449999999999 119.74449999999999 ZT20-23 147.003 147.003 147.003