condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0043074 0.0043074 0.0043074 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0040734000000000005 0.0040734000000000005 0.0040734000000000005 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0