condition mean min max ZT0-3 0.05905525 0.0 0.1181105 ZT4-7 0.4066495 0.4066495 0.4066495 ZT8-11 0.08089555000000001 0.08089555000000001 0.08089555000000001 ZT12-15 0 0 0 ZT16-19 0.27784699999999996 0.27784699999999996 0.27784699999999996 ZT20-23 0.23982094999999998 0.23982094999999998 0.23982094999999998