condition mean min max ZT0-3 0.79795535175 0.36639240700000003 1.2295182965 ZT4-7 1.73452810725 1.4488629825000001 2.020193232 ZT8-11 1.64649751075 1.313009197 1.9799858245 ZT12-15 1.47484417425 1.1493023975 1.800385951 ZT16-19 1.3763541849999998 1.3379274839999997 1.414780886 ZT20-23 1.9439750645 1.6967326150000002 2.191217514