condition mean min max ZT0-3 0.52354425 0.520979 0.5261095 ZT4-7 0.443155 0.443155 0.443155 ZT8-11 0.6576245000000001 0.6576245000000001 0.6576245000000001 ZT12-15 0 0 0 ZT16-19 1.08625 1.08625 1.08625 ZT20-23 0.7274495 0.7274495 0.7274495