condition mean min max ZT0-3 0.031360533333333336 0.0 0.06736 ZT4-7 0.0776005 0.0776005 0.0776005 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0