condition mean min max ZT0-3 80.1969 80.1969 80.1969 ZT4-7 112.018 112.018 112.018 ZT8-11 69.97274999999999 69.97274999999999 69.97274999999999 ZT12-15 39.43945 39.43945 39.43945 ZT16-19 38.387100000000004 38.387100000000004 38.387100000000004 ZT20-23 47.09555 47.09555 47.09555