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• projection density = sum of detected pixels / sum of all pixels in division
• projection energy = sum of detected pixel intensity / sum of all pixels in division
• injection_fraction = fraction of pixels belonging to manually annotated injection site
• injection_density = density of detected pixels within the manually annotated injection site
• injection_energy = energy of detected pixels within the manually annotated injection site
• data_mask = binary mask indicating if a voxel contains valid data (0=invalid, 1=valid). Only valid voxels should be used for analysis

For each summation type, grid files can be downloaded at 10, 25, 50 and 100 μm isotropic voxel resolution.

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