condition mean min max ZT0-3 90.002928 90.002928 90.002928 ZT4-7 94.50016 94.50016 94.50016 ZT8-11 110.441537 110.441537 110.441537 ZT12-15 107.5469365 107.5469365 107.5469365 ZT16-19 114.343997 114.343997 114.343997 ZT20-23 106.87618549999999 106.87618549999999 106.87618549999999