condition mean min max ZT0-3 37.466375 36.5105 38.42225 ZT4-7 45.983149999999995 45.983149999999995 45.983149999999995 ZT8-11 34.276849999999996 34.276849999999996 34.276849999999996 ZT12-15 0 0 0 ZT16-19 43.78245 43.78245 43.78245 ZT20-23 34.13845 34.13845 34.13845