condition mean min max ZT0-3 2460.05 2460.05 2460.05 ZT4-7 2989.1 2989.1 2989.1 ZT8-11 3197.5 3197.5 3197.5 ZT12-15 4072.3 4072.3 4072.3 ZT16-19 2819.45 2819.45 2819.45 ZT20-23 2534.35 2534.35 2534.35