#Gaussian kernel; 1st col. distance [m]; 2nd col. R0. Spatial grid 120x120 gridpoints. Dotted curve in Fig. 1. 1e-05 6.36619772367e-13 10.0 0.476160479136 20.0 1.08283941075 30.0 1.42879028164 40.0 1.61841357304 50.0 1.72943935164 60.0 1.79901052789 70.0 1.84515559223 80.0 1.87720821735 90.0 1.9003243709 100.0 1.91751919232 110.0 1.93064359459 120.0 1.94088174629 130.0 1.94901837909 140.0 1.95558961213 150.0 1.96097143838 160.0 1.96543370517 170.0 1.96917406332 180.0 1.97233988145 190.0 1.97504286905 200.0 1.97736883649 210.0 1.97938470533 220.0 1.98114309638 230.0 1.98268608156 240.0 1.98404736028 250.0 1.98525436354