condition mean min max ZT0-3 0.091234 0.091234 0.091234 ZT4-7 0.0 0.0 0.0 ZT8-11 1.271265 1.271265 1.271265 ZT12-15 0.669242 0.669242 0.669242 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0