condition mean min max ZT0-3 89.248995 89.248995 89.248995 ZT4-7 119.227902 119.227902 119.227902 ZT8-11 87.06384650000001 87.06384650000001 87.06384650000001 ZT12-15 111.06511650000002 111.06511650000002 111.06511650000002 ZT16-19 121.0384215 121.0384215 121.0384215 ZT20-23 43.4544105 43.4544105 43.4544105