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LET-dependent G values at t1 = 1 μs. The data for each option were scaled by factors of 1, 2, 3, as shown, for clarity. Connecting lines are added to guide the eye. Ratios with respect to the reference results are shown in the lower section of each panel. Ratios corresponding to 0 ns pulse width (not shown) agreed within statistical uncertainty with results from 1 ns pulse width. Error bars represent one standard deviation of the combined statistical uncertainties.
