condition mean min max ZT0-3 43.690799999999996 41.83925 45.54235 ZT4-7 39.468450000000004 39.468450000000004 39.468450000000004 ZT8-11 31.893349999999998 31.893349999999998 31.893349999999998 ZT12-15 0 0 0 ZT16-19 41.1589 41.1589 41.1589 ZT20-23 55.218199999999996 55.218199999999996 55.218199999999996