condition mean min max ZT0-3 195.0 195.0 195.0 ZT4-7 173.1 173.1 173.1 ZT8-11 157.65 157.65 157.65 ZT12-15 152.25 152.25 152.25 ZT16-19 167.10000000000002 167.10000000000002 167.10000000000002 ZT20-23 159.85000000000002 159.85000000000002 159.85000000000002