condition mean min max ZT0-3 45.3124 43.442899999999995 47.1819 ZT4-7 37.261449999999996 37.261449999999996 37.261449999999996 ZT8-11 42.80735 42.80735 42.80735 ZT12-15 0 0 0 ZT16-19 36.806799999999996 36.806799999999996 36.806799999999996 ZT20-23 45.05565 45.05565 45.05565