condition mean min max ZT0-3 52.463749 52.463749 52.463749 ZT4-7 106.53977649999999 106.53977649999999 106.53977649999999 ZT8-11 94.714182 94.714182 94.714182 ZT12-15 84.8608675 84.8608675 84.8608675 ZT16-19 42.568963 42.568963 42.568963 ZT20-23 29.6226475 29.6226475 29.6226475