condition mean min max ZT0-3 36.786675 35.198350000000005 38.375 ZT4-7 26.443550000000002 26.443550000000002 26.443550000000002 ZT8-11 53.359899999999996 53.359899999999996 53.359899999999996 ZT12-15 0 0 0 ZT16-19 75.08070000000001 75.08070000000001 75.08070000000001 ZT20-23 53.3426 53.3426 53.3426