Comparison of data (in blue) with calculated values  for \(V_{pd}\left(\theta\right)\) from Eq. \ref{eq:Photodiode_Voltage}. Error bars for calculated values were determined automatically from the uncertainties in the input parameters  (using the uncertainties package and Eq. \ref{eq:Photodiode_Voltage} instead of Eq. \ref{eq:delta_V_Malus}).