{
  "point_count": 505574200,
  "source_db_signature": [
    [
      "PHerc0490A_20250521151210_surface_m7_L0_th0.2.dbm",
      6526713856,
      1785315126785870571
    ]
  ],
  "track_count": 16689265,
  "version": 1
}