condition mean min max ZT0-3 1.0787995000000001 0.923854 1.233745 ZT4-7 1.2422835 1.2422835 1.2422835 ZT8-11 0.422434 0.422434 0.422434 ZT12-15 0 0 0 ZT16-19 0.7282655 0.7282655 0.7282655 ZT20-23 0.511778 0.511778 0.511778