condition mean min max ZT0-3 109.646949 109.646949 109.646949 ZT4-7 120.168149 120.168149 120.168149 ZT8-11 125.49281400000001 125.49281400000001 125.49281400000001 ZT12-15 114.950955 114.950955 114.950955 ZT16-19 119.7865185 119.7865185 119.7865185 ZT20-23 117.9037695 117.9037695 117.9037695