Files contained 10052_2021_9700_MOESM1_ESM.txt 10052_2021_9700_MOESM2_ESM.txt 10052_2021_9700_MOESM3_ESM.txt 10052_2021_9700_MOESM4_ESM.txt (this file) 10052_2021_9700_MOESM5_ESM.txt 10052_2021_9700_MOESM6_ESM.txt File: 10052_2021_9700_MOESM1_ESM.txt Values which describe the correlation between bins in the unfolding process is given for each energy bin. The first column and first row indicate the energy in base-10 log of in energy / eV. This file corresponds to the combined spectrum (see section 5) File: 10052_2021_9700_MOESM2_ESM.txt Values which describe the correlation between bins in the unfolding process is given for each energy bin. The first column and first row indicate the energy in base-10 log of in energy / eV. This file corresponds to the measurement of the energy spectrum using only the sd750 (see section 4). File: 10052_2021_9700_MOESM3_ESM.txt The bin migration in the unfolding process are given in this file. The values correspond to the R_{ij} which define the expected values v_i = sum_j(R_{ij} u_j). See section 4. File: 10052_2021_9700_MOESM5_ESM.txt The values of the combined spectrum and related errors are given in this file. These values correspond to the values in Table 10. Column information is given in header. File: 10052_2021_9700_MOESM6_ESM.txt The values of the SD750 spectrum and related errors are given in this file. These values correspond to the values in Table 8. Column information is given in header.