condition mean min max ZT0-3 48.3219 48.3219 48.3219 ZT4-7 37.26935 37.26935 37.26935 ZT8-11 33.21195 33.21195 33.21195 ZT12-15 44.0107 44.0107 44.0107 ZT16-19 57.40505 57.40505 57.40505 ZT20-23 51.193650000000005 51.193650000000005 51.193650000000005