condition mean min max ZT0-3 59.167075 45.5583 72.77584999999999 ZT4-7 173.8885 173.8885 173.8885 ZT8-11 300.5815 300.5815 300.5815 ZT12-15 0 0 0 ZT16-19 170.6265 170.6265 170.6265 ZT20-23 124.2885 124.2885 124.2885