condition mean min max ZT0-3 1037.0 1037.0 1037.0 ZT4-7 1487.2 1487.2 1487.2 ZT8-11 1558.75 1558.75 1558.75 ZT12-15 2060.0 2060.0 2060.0 ZT16-19 1825.65 1825.65 1825.65 ZT20-23 957.95 957.95 957.95