condition mean min max ZT0-3 1899.26 1897.915 1900.605 ZT4-7 1609.2350000000001 1609.2350000000001 1609.2350000000001 ZT8-11 987.845 987.845 987.845 ZT12-15 0 0 0 ZT16-19 1340.32 1340.32 1340.32 ZT20-23 1622.345 1622.345 1622.345