condition mean min max ZT0-3 69.8115 66.9418 72.6812 ZT4-7 63.9958 63.9958 63.9958 ZT8-11 53.65285 53.65285 53.65285 ZT12-15 0 0 0 ZT16-19 53.44005 53.44005 53.44005 ZT20-23 63.8958 63.8958 63.8958