condition mean min max ZT0-3 0.02509095 0.02110285 0.0304777 ZT4-7 0.06281344999999999 0.06281344999999999 0.06281344999999999 ZT8-11 0.02179365 0.02179365 0.02179365 ZT12-15 0.08386035 0.0530157 0.114705 ZT16-19 0.0202826 0.0202826 0.0202826 ZT20-23 0.0 0.0 0.0