condition mean min max ZT0-3 45.97085 45.63765 46.304050000000004 ZT4-7 63.529700000000005 63.529700000000005 63.529700000000005 ZT8-11 52.6249 52.6249 52.6249 ZT12-15 0 0 0 ZT16-19 34.68015 34.68015 34.68015 ZT20-23 46.16865 46.16865 46.16865