condition mean min max ZT0-3 6.418489188500001 2.625243077 10.2117353 ZT4-7 2.39630898075 2.1767106490000003 2.6159073125 ZT8-11 5.08644098875 3.783511894 6.389370083499999 ZT12-15 9.133671357 8.4070174375 9.8603252765 ZT16-19 4.89033155125 4.7602437315 5.020419371 ZT20-23 5.77338596575 4.8289834435 6.717788488