condition mean min max ZT0-3 121.001288 121.001288 121.001288 ZT4-7 76.69900200000001 76.69900200000001 76.69900200000001 ZT8-11 93.34553600000001 93.34553600000001 93.34553600000001 ZT12-15 97.39506399999999 97.39506399999999 97.39506399999999 ZT16-19 67.15221749999999 67.15221749999999 67.15221749999999 ZT20-23 83.69619349999999 83.69619349999999 83.69619349999999