condition mean min max ZT0-3 43.502954 43.502954 43.502954 ZT4-7 55.131708 55.131708 55.131708 ZT8-11 87.8471815 87.8471815 87.8471815 ZT12-15 89.0669665 89.0669665 89.0669665 ZT16-19 94.2380095 94.2380095 94.2380095 ZT20-23 72.175089 72.175089 72.175089