condition mean min max ZT0-3 927.3 927.3 927.3 ZT4-7 6361.9 6361.9 6361.9 ZT8-11 12347.1 12347.1 12347.1 ZT12-15 20066.699999999997 20066.699999999997 20066.699999999997 ZT16-19 13823.7 13823.7 13823.7 ZT20-23 5282.4 5282.4 5282.4