condition mean min max ZT0-3 12.804101 12.804101 12.804101 ZT4-7 10.464945 10.464945 10.464945 ZT8-11 12.129749499999999 12.129749499999999 12.129749499999999 ZT12-15 11.475484 11.475484 11.475484 ZT16-19 12.428656 12.428656 12.428656 ZT20-23 11.7196995 11.7196995 11.7196995