condition mean min max ZT0-3 807.95 807.95 807.95 ZT4-7 830.2 830.2 830.2 ZT8-11 867.35 867.35 867.35 ZT12-15 979.45 979.45 979.45 ZT16-19 983.5 983.5 983.5 ZT20-23 894.8 894.8 894.8