condition mean min max ZT0-3 2.24647 2.24647 2.24647 ZT4-7 0.11163005 0.11163005 0.11163005 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0646197 0.0646197 0.0646197 ZT16-19 0.02427765 0.02427765 0.02427765 ZT20-23 2.62828 2.62828 2.62828