condition mean min max ZT0-3 94.886147 94.886147 94.886147 ZT4-7 84.91047649999999 84.91047649999999 84.91047649999999 ZT8-11 98.0232405 98.0232405 98.0232405 ZT12-15 102.983701 102.983701 102.983701 ZT16-19 113.83994150000001 113.83994150000001 113.83994150000001 ZT20-23 105.52564749999999 105.52564749999999 105.52564749999999