condition mean min max ZT0-3 0.051606650000000004 0.051606650000000004 0.051606650000000004 ZT4-7 0.0469763 0.0469763 0.0469763 ZT8-11 0.0639911 0.0639911 0.0639911 ZT12-15 0.03623435 0.03623435 0.03623435 ZT16-19 0.041036550000000005 0.041036550000000005 0.041036550000000005 ZT20-23 0.04069155 0.04069155 0.04069155