Figure 5. Examples of one-term linear fits (in the form \(y=a\bullet x\)) over the data points of measured radiance and model reflectance factor for three sols (sol 12, 178, 346, along the columns) in four filters (L6, L3, R2, R5, along the rows). The straight black lines are the fits. All the eight clean spots are plotted, but the white was not used to compute the fits.