condition mean min max ZT0-3 62.9131 62.9131 62.9131 ZT4-7 56.0914 56.0914 56.0914 ZT8-11 66.26259999999999 66.26259999999999 66.26259999999999 ZT12-15 83.10210000000001 83.10210000000001 83.10210000000001 ZT16-19 91.23295 91.23295 91.23295 ZT20-23 58.41075 58.41075 58.41075