condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.044639000000000005 0.044639000000000005 0.044639000000000005 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.06938333333333334 0.0 0.13876666666666668 ZT20-23 0 0 0