condition mean min max ZT0-3 6108.45 6108.45 6108.45 ZT4-7 5544.5 5544.5 5544.5 ZT8-11 4677.1 4677.1 4677.1 ZT12-15 5075.7 5075.7 5075.7 ZT16-19 5399.5 5399.5 5399.5 ZT20-23 6067.1 6067.1 6067.1