condition mean min max ZT0-3 1.6521033333333335 0.0 2.62141 ZT4-7 2.28874 2.28874 2.28874 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 2.244145 2.244145 2.244145 ZT20-23 0.0 0.0 0.0