condition mean min max ZT0-3 895.95 895.95 895.95 ZT4-7 1027.7 1027.7 1027.7 ZT8-11 811.7 811.7 811.7 ZT12-15 779.75 779.75 779.75 ZT16-19 838.6 838.6 838.6 ZT20-23 869.3 869.3 869.3