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Table 1.

Size in memory for photon-packet buffers, individual cells, and subgrids of various sizes for the two modes of the photoionization algorithm.

Data structure Hydrogen-only mode Full mode
(Strömgren test) (Lexington test)
Photon buffer 17.2 KB 37.52 KB
Single cell 96 bytes 310 bytes
43 cell subgrid 6.46 KB 20.0 KB
83 cell subgrid 48.5 KB 156 KB
163 cell subgrid 384 KB 1.22 MB
323 cell subgrid 3.00 MB 9.75 MB

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