Ratio of the 30–300 proton input flux measured by MOS2 and by PN as a function of the PN rates in the same band. The dashed blue line is the average value for the interval A and B, while the dash-dotted green line is the average for C and D. The dotted lines indicate the error ranges. Colors on the points are relative to the four epochs: epoch A in red, epoch B in blue, epoch C in green, and epoch D in gray.