(DIR) ..
 (TXT) density.txt                                              1.2K 2026-03-13 17:17 UTC
 (BIN) elements.csv                                            20.5K 2026-03-13 17:17 UTC
 (BIN) families.csv                                             4.2K 2026-03-13 17:17 UTC
 (TXT) periodic.txt                                             4.1K 2026-03-13 17:17 UTC
 (BIN) shells.csv                                               1.1K 2026-03-13 17:17 UTC
 (BIN) sources.csv                                              257B 2026-03-13 17:17 UTC