condition mean min max ZT0-3 0.04658725 0.0 0.0931745 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.09385779999999999 0.09385779999999999 0.09385779999999999 ZT20-23 0.04736325 0.04736325 0.04736325