condition mean min max ZT0-3 33.611226 33.611226 33.611226 ZT4-7 25.6629175 25.6629175 25.6629175 ZT8-11 30.0287255 30.0287255 30.0287255 ZT12-15 24.898056500000003 24.898056500000003 24.898056500000003 ZT16-19 37.228078000000004 37.228078000000004 37.228078000000004 ZT20-23 25.6661155 25.6661155 25.6661155