condition mean min max ZT0-3 875.4 875.4 875.4 ZT4-7 824.9 824.9 824.9 ZT8-11 1013.6500000000001 1013.6500000000001 1013.6500000000001 ZT12-15 866.45 866.45 866.45 ZT16-19 723.9 723.9 723.9 ZT20-23 818.75 818.75 818.75