condition mean min max ZT0-3 22.933175000000002 12.5953 33.27105 ZT4-7 521.735 521.735 521.735 ZT8-11 382.663 382.663 382.663 ZT12-15 0 0 0 ZT16-19 65.55815 65.55815 65.55815 ZT20-23 68.30885 68.30885 68.30885