Seasonal water production rate of 81P scaled with observational data. The red, green, blue, magenta, and cyan points show the observational data from previous studies, and the black-filled circles are the average data within the 50-day bin (Table A.1). The gray and blue-filled regions represent the possible ranges of the water production rates from the entire surface (gray) and from only the explored side (blue), respectively, which is scaled by the average data. The dotted line shows the dust escape rates adopted from Pozuelos et al. (2014a). The black arrow indicates the day on which Stardust encountered 81P.