condition mean min max ZT0-3 0.01208645 0.0 0.0241729 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0134595125 0.0 0.026919025 ZT16-19 0.00675425 0.0 0.0135085 ZT20-23 0 0 0