condition mean min max ZT0-3 462.25 462.25 462.25 ZT4-7 524.6 524.6 524.6 ZT8-11 647.1 647.1 647.1 ZT12-15 1059.65 1059.65 1059.65 ZT16-19 994.7 994.7 994.7 ZT20-23 681.55 681.55 681.55