condition mean min max ZT0-3 1597.7315764149998 45.28315348 3150.17999935 ZT4-7 9215.50150375 8245.3829095 10185.620098 ZT8-11 8291.161623 6757.029253 9825.293993 ZT12-15 1426.614399075 263.60395245 2589.6248456999997 ZT16-19 101.31695989 97.26788558000001 105.3660342 ZT20-23 45.8941079945 16.871472994 74.91674299499999