condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.055376 0.055376 0.055376 ZT8-11 0.0 0.0 0.0 ZT12-15 0.047400500000000005 0.0 0.09480100000000001 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0