condition mean min max ZT0-3 10.117284999999999 1.330805 15.35155 ZT4-7 1.285075 1.285075 1.285075 ZT8-11 0.559164 0.559164 0.559164 ZT12-15 2.29162275 1.2402455 3.343 ZT16-19 5.46804 5.46804 5.46804 ZT20-23 9.26512 9.26512 9.26512