condition mean min max ZT0-3 45.8887 45.8887 45.8887 ZT4-7 43.519999999999996 43.519999999999996 43.519999999999996 ZT8-11 33.44435 33.44435 33.44435 ZT12-15 33.774 33.774 33.774 ZT16-19 49.6839 49.6839 49.6839 ZT20-23 40.30085 40.30085 40.30085