condition mean min max ZT0-3 109.42345 105.3854 113.4615 ZT4-7 83.29214999999999 83.29214999999999 83.29214999999999 ZT8-11 92.09174999999999 92.09174999999999 92.09174999999999 ZT12-15 0 0 0 ZT16-19 135.7475 135.7475 135.7475 ZT20-23 132.035 132.035 132.035