condition mean min max ZT0-3 99.15107499999999 84.78625 113.51589999999999 ZT4-7 116.8435 116.8435 116.8435 ZT8-11 159.5685 159.5685 159.5685 ZT12-15 0 0 0 ZT16-19 213.048 213.048 213.048 ZT20-23 160.3935 160.3935 160.3935