condition mean min max ZT0-3 117.6505 117.6505 117.6505 ZT4-7 110.553 110.553 110.553 ZT8-11 65.78184999999999 65.78184999999999 65.78184999999999 ZT12-15 68.61185 68.61185 68.61185 ZT16-19 86.76545 86.76545 86.76545 ZT20-23 113.52449999999999 113.52449999999999 113.52449999999999