condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.03434835 0.03434835 0.03434835 ZT16-19 0.01290465 0.01290465 0.01290465 ZT20-23 0.0064669 0.0064669 0.0064669