condition mean min max ZT0-3 40.134625 34.6274 45.641850000000005 ZT4-7 42.113150000000005 42.113150000000005 42.113150000000005 ZT8-11 39.743700000000004 39.743700000000004 39.743700000000004 ZT12-15 0 0 0 ZT16-19 48.91165 48.91165 48.91165 ZT20-23 42.8642 42.8642 42.8642