condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.072752 0.072752 0.072752 ZT12-15 0.0 0.0 0.0 ZT16-19 0.37925000000000003 0.37925000000000003 0.37925000000000003 ZT20-23 0.0 0.0 0.0