condition mean min max ZT0-3 58.411 58.411 58.411 ZT4-7 21.136200000000002 21.136200000000002 21.136200000000002 ZT8-11 38.21265 38.21265 38.21265 ZT12-15 47.28255 47.28255 47.28255 ZT16-19 89.11985 89.11985 89.11985 ZT20-23 87.6834 87.6834 87.6834