condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.1667385 0.1667385 0.1667385 ZT8-11 0.495052 0.495052 0.495052 ZT12-15 0 0 0 ZT16-19 0.644137 0.644137 0.644137 ZT20-23 0.0 0.0 0.0