MASC-4 Measured scattering matrix elements as functions of scattering angle (in degrees), corresponding to curves for MASC-4 at 488 nm presented in "Assessing the Effects of Composition and Surface Roughness on the Photopolarimetric Response of Planetary Regoliths", Francisco J. García-Izquierdo, Elisa Frattin, Julia Martikainen, Olga Muñoz, Alvaro Alvarez-Candal, Fernando Moreno, María Passas-Varo, Juan Carlos Gómez-Martín, Teresa Jardiel, Marco Peiteado, Amador C. Caballero, Gorden Videen, Johannes Markkanen, Antti Penttilä, and Karri Muinonen. The experimental errors are also given. DATA ARE FREELY AVAILABLE UNDER THE REQUEST OF CITATION OF: Francisco J. García-Izquierdo et al ApJS, 282 49, 2026 AND Munoz et al. JQSRT, 331, id. 109252, 2025. All F11(θ) curves are normalized to their corresponding albedo at 170º. theta(deg) F11 error -F12/F11 error F22/F11 error F33/F11 error F34/F11 error F44/F11 error 94 0.005 0.001 0.580 0.112 0.775 0.129 -0.308 0.079 0.013 0.131 -0.432 0.095 96 0.007 0.001 0.491 0.077 0.764 0.089 -0.430 0.080 -0.015 0.143 -0.344 0.072 98 0.010 0.001 0.569 0.087 0.794 0.099 -0.344 0.092 0.031 0.049 -0.357 0.048 100 0.011 0.001 0.488 0.089 0.768 0.103 -0.537 0.043 0.004 0.056 -0.414 0.077 102 0.012 0.001 0.466 0.075 0.773 0.094 -0.463 0.083 0.030 0.025 -0.438 0.072 104 0.014 0.001 0.416 0.025 0.753 0.046 -0.483 0.010 0.007 0.044 -0.498 0.105 106 0.016 0.001 0.483 0.038 0.812 0.048 -0.521 0.050 0.063 0.032 -0.505 0.044 108 0.017 0.001 0.403 0.028 0.776 0.033 -0.545 0.039 0.037 0.067 -0.535 0.016 110 0.019 0.001 0.397 0.054 0.783 0.066 -0.552 0.032 0.021 0.035 -0.494 0.039 112 0.020 0.001 0.327 0.015 0.768 0.023 -0.572 0.054 0.029 0.047 -0.599 0.039 114 0.023 0.001 0.361 0.020 0.792 0.027 -0.625 0.024 0.029 0.038 -0.592 0.021 116 0.024 0.001 0.316 0.016 0.770 0.023 -0.680 0.019 0.039 0.020 -0.611 0.032 118 0.025 0.001 0.319 0.034 0.795 0.049 -0.627 0.024 0.035 0.034 -0.586 0.032 120 0.026 0.001 0.266 0.016 0.782 0.020 -0.649 0.022 0.021 0.025 -0.616 0.052 122 0.028 0.001 0.270 0.035 0.779 0.043 -0.639 0.047 -0.023 0.029 -0.617 0.026 124 0.029 0.001 0.250 0.028 0.790 0.035 -0.673 0.043 0.006 0.026 -0.628 0.030 126 0.031 0.001 0.240 0.012 0.783 0.020 -0.692 0.033 0.008 0.037 -0.624 0.028 128 0.031 0.001 0.212 0.027 0.780 0.035 -0.707 0.030 -0.003 0.016 -0.646 0.034 130 0.034 0.001 0.161 0.018 0.776 0.027 -0.755 0.026 -0.007 0.017 -0.617 0.026 132 0.035 0.001 0.182 0.016 0.792 0.023 -0.759 0.021 0.019 0.029 -0.661 0.031 134 0.035 0.001 0.164 0.022 0.777 0.027 -0.714 0.024 0.011 0.029 -0.703 0.043 136 0.037 0.001 0.134 0.049 0.795 0.062 -0.727 0.025 -0.001 0.031 -0.673 0.029 138 0.038 0.001 0.135 0.020 0.809 0.030 -0.720 0.029 0.019 0.013 -0.655 0.014 140 0.040 0.001 0.113 0.020 0.808 0.027 -0.749 0.027 0.011 0.019 -0.701 0.028 142 0.042 0.002 0.113 0.008 0.802 0.024 -0.769 0.030 -0.007 0.020 -0.682 0.029 144 0.044 0.001 0.121 0.010 0.794 0.017 -0.748 0.022 -0.004 0.027 -0.716 0.040 146 0.044 0.001 0.089 0.008 0.804 0.011 -0.755 0.021 -0.026 0.023 -0.717 0.022 148 0.045 0.002 0.072 0.023 0.801 0.032 -0.773 0.019 0.005 0.025 -0.712 0.016 150 0.047 0.001 0.064 0.027 0.814 0.035 -0.765 0.005 -0.009 0.038 -0.710 0.023 151 0.048 0.002 0.047 0.008 0.810 0.013 -0.785 0.009 0.013 0.016 -0.689 0.042 152 0.048 0.002 0.063 0.010 0.808 0.020 -0.752 0.029 -0.012 0.013 -0.722 0.018 153 0.049 0.002 0.054 0.030 0.814 0.040 -0.759 0.035 -0.005 0.023 -0.727 0.014 154 0.051 0.002 0.047 0.012 0.813 0.020 -0.742 0.020 -0.020 0.017 -0.705 0.015 155 0.051 0.001 0.048 0.014 0.817 0.020 -0.775 0.029 -0.015 0.024 -0.725 0.015 156 0.050 0.002 0.038 0.017 0.811 0.023 -0.792 0.021 -0.006 0.029 -0.716 0.032 157 0.051 0.002 0.026 0.010 0.804 0.016 -0.793 0.020 0.010 0.020 -0.731 0.023 158 0.054 0.001 0.043 0.015 0.822 0.020 -0.777 0.020 -0.024 0.016 -0.737 0.010 159 0.053 0.002 0.012 0.007 0.805 0.011 -0.799 0.013 -0.007 0.009 -0.723 0.010 160 0.055 0.002 0.027 0.026 0.819 0.036 -0.824 0.025 -0.004 0.014 -0.733 0.040 161 0.056 0.001 0.012 0.008 0.826 0.014 -0.801 0.034 -0.024 0.009 -0.717 0.021 162 0.054 0.002 0.016 0.003 0.828 0.013 -0.794 0.021 -0.002 0.025 -0.743 0.014 163 0.057 0.002 0.015 0.042 0.832 0.057 -0.785 0.017 0.016 0.009 -0.757 0.025 164 0.058 0.002 0.010 0.015 0.830 0.020 -0.768 0.019 -0.002 0.019 -0.728 0.009 165 0.061 0.002 0.020 0.015 0.822 0.021 -0.817 0.008 -0.016 0.014 -0.721 0.015 166 0.060 0.002 0.012 0.010 0.828 0.016 -0.819 0.020 -0.006 0.025 -0.733 0.022 167 0.061 0.002 -0.003 0.032 0.828 0.042 -0.789 0.033 -0.016 0.017 -0.738 0.027 168 0.062 0.002 -0.001 0.004 0.833 0.008 -0.811 0.020 -0.008 0.024 -0.715 0.021 169 0.061 0.002 0.002 0.007 0.820 0.016 -0.802 0.036 -0.018 0.036 -0.729 0.023 170 0.063 0.000 -0.011 0.029 0.824 0.038 -0.827 0.013 -0.011 0.026 -0.711 0.023 171 0.064 0.002 -0.003 0.016 0.824 0.024 -0.797 0.012 -0.014 0.008 -0.734 0.015 172 0.065 0.002 -0.023 0.020 0.820 0.027 -0.820 0.009 -0.025 0.016 -0.706 0.017 174 0.066 0.003 -0.006 0.025 0.822 0.034 -0.782 0.038 -0.018 0.029 -0.729 0.019 175 0.067 0.001 -0.015 0.011 0.827 0.018 -0.822 0.032 -0.032 0.014 -0.692 0.024 176 0.068 0.002 -0.006 0.015 0.826 0.019 -0.793 0.021 -0.022 0.014 -0.712 0.010 177 0.068 0.003 -0.022 0.035 0.818 0.046 -0.821 0.027 -0.022 0.020 -0.692 0.024