condition mean min max ZT0-3 0.09549566666666666 0.0 0.286487 ZT4-7 0.0 0.0 0.0 ZT8-11 0.27379 0.27379 0.27379 ZT12-15 0.0 0.0 0.0 ZT16-19 0.265452 0.265452 0.265452 ZT20-23 0.0 0.0 0.0