condition mean min max ZT0-3 46.5645 46.5645 46.5645 ZT4-7 42.441 42.441 42.441 ZT8-11 36.118 36.118 36.118 ZT12-15 32.41685 32.41685 32.41685 ZT16-19 41.796099999999996 41.796099999999996 41.796099999999996 ZT20-23 47.23895 47.23895 47.23895