condition mean min max ZT0-3 896.7 896.7 896.7 ZT4-7 1008.1 1008.1 1008.1 ZT8-11 747.6 747.6 747.6 ZT12-15 721.75 721.75 721.75 ZT16-19 747.8 747.8 747.8 ZT20-23 925.8000000000001 925.8000000000001 925.8000000000001