condition mean min max ZT0-3 1.3659525000000001 1.356335 1.37557 ZT4-7 0.0 0.0 0.0 ZT8-11 0.698875 0.698875 0.698875 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 1.35235 1.35235 1.35235