condition mean min max ZT0-3 218.323 218.323 218.323 ZT4-7 183.994 183.994 183.994 ZT8-11 118.78943333333333 118.78943333333333 118.78943333333333 ZT12-15 96.7558 96.7558 96.7558 ZT16-19 133.0025 133.0025 133.0025 ZT20-23 176.17000000000002 176.17000000000002 176.17000000000002