condition mean min max ZT0-3 0.600115 0.5443125 0.6559175 ZT4-7 0.8424035000000001 0.8424035000000001 0.8424035000000001 ZT8-11 2.5191 2.5191 2.5191 ZT12-15 0 0 0 ZT16-19 2.382245 2.382245 2.382245 ZT20-23 1.1050045000000002 1.1050045000000002 1.1050045000000002