The following model is used to represent the effect of the solar radiation on the photosynthesis rate of aquatic plants:

The following model is used to represent the effect of the solar radiation on the photosynthesis rate of aquatic plants:  P = Pm* e ^ ((- I/ Isat)+1)where P = photosynthesis rates (mg m-3d-1) ,Pm = the maximum photosynthesis rates (mg m-3d-1), I = solar radiation (µE m-2s-1) and Isat = optimal solar radiation (µE m-2s-1). Use linear regression to evaluate the value of Pm and Isat based on the following data.