condition mean min max ZT0-3 29.0556585625 28.86090594 29.250411185 ZT4-7 34.443946145 32.21873523 36.669157059999996 ZT8-11 39.31550097833333 36.59115428333333 42.039847673333334 ZT12-15 160.79234270166666 150.59820360333333 170.9864818 ZT16-19 124.35706569999999 120.88867529999999 127.8254561 ZT20-23 199.23343943333333 181.58392619999998 216.88295266666668