condition mean min max ZT0-3 731.1 731.1 731.1 ZT4-7 913.3 913.3 913.3 ZT8-11 1078.6999999999998 1078.6999999999998 1078.6999999999998 ZT12-15 881.6 881.6 881.6 ZT16-19 748.0 748.0 748.0 ZT20-23 744.2 744.2 744.2