condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.12874525 0.12874525 0.12874525 ZT8-11 0.0 0.0 0.0 ZT12-15 0.02890475 0.02890475 0.02890475 ZT16-19 0.0321422 0.0321422 0.0321422 ZT20-23 0.0 0.0 0.0