Vol. XVII. No. 8 THE MAGNETIC INCLINATION AT OSLO OBSERVATORY 1871-1908 9 O'Clock 14 O'Clock I = 70° + tabulated values in tenths of minutes. I = 70° + tabulated values in tenths of minutes. (9999 = No data) 1908 Jan. Feb. Mar. Apr. May June July Aug. Sep. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sep. Oct. Nov. Dec. 1 325 506 477 485 435 426 430 460 9999 9999 9999 9999 285 479 450 386 467 406 470 515 9999 9999 9999 9999 2 512 296 546 582 517 447 440 466 9999 9999 9999 9999 551 390 530 415 496 405 424 437 9999 9999 9999 9999 3 485 480 430 473 496 381 445 410 9999 9999 9999 9999 576 596 452 425 496 370 516 490 9999 9999 9999 9999 4 526 482 612 490 516 430 436 521 9999 9999 9999 9999 587 610 581 476 530 446 485 407 9999 9999 9999 9999 5 321 530 490 440 516 414 463 454 9999 9999 9999 9999 377 531 410 430 440 420 460 416 9999 9999 9999 9999 6 477 441 450 491 417 487 464 480 9999 9999 9999 9999 493 540 512 455 475 420 392 430 9999 9999 9999 9999 7 541 513 480 455 460 395 447 430 9999 9999 9999 9999 435 516 540 454 473 460 381 425 9999 9999 9999 9999 8 554 432 540 386 436 373 389 435 9999 9999 9999 9999 648 520 543 450 496 496 421 460 9999 9999 9999 9999 9 533 346 450 507 404 450 421 420 9999 9999 9999 9999 661 460 506 496 428 393 446 440 9999 9999 9999 9999 10 502 503 489 403 460 416 386 425 9999 9999 9999 9999 520 571 475 437 512 430 509 435 9999 9999 9999 9999 11 493 483 365 465 530 456 410 420 9999 9999 9999 9999 660 494 459 535 450 501 529 475 9999 9999 9999 9999 12 320 480 365 486 560 466 430 365 9999 9999 9999 9999 330 494 542 530 457 450 434 555 9999 9999 9999 9999 13 475 385 466 462 416 436 475 505 9999 9999 9999 9999 500 541 413 425 436 380 453 475 9999 9999 9999 9999 14 570 492 540 416 550 430 476 505 9999 9999 9999 9999 570 490 471 410 415 426 420 495 9999 9999 9999 9999 15 527 557 496 505 430 446 480 510 9999 9999 9999 9999 509 546 544 414 576 420 506 515 9999 9999 9999 9999 16 472 532 520 465 499 448 543 455 9999 9999 9999 9999 460 575 520 508 473 421 580 470 9999 9999 9999 9999 17 444 484 513 446 390 426 495 500 9999 9999 9999 9999 458 508 511 434 405 456 516 490 9999 9999 9999 9999 18 416 449 427 480 410 450 434 9999 9999 9999 9999 9999 436 593 560 390 417 470 505 9999 9999 9999 9999 9999 19 303 348 560 456 414 520 486 9999 9999 9999 9999 9999 400 400 469 566 480 535 515 9999 9999 9999 9999 9999 20 509 418 515 463 395 510 566 9999 9999 9999 9999 9999 540 517 569 420 399 555 480 9999 9999 9999 9999 9999 21 440 495 473 450 391 450 551 9999 9999 9999 9999 9999 386 423 561 456 406 460 430 9999 9999 9999 9999 9999 22 394 410 485 486 446 420 400 9999 9999 9999 9999 9999 469 516 400 470 500 461 392 9999 9999 9999 9999 9999 23 406 523 434 395 417 450 495 9999 9999 9999 9999 9999 469 583 511 471 422 421 416 9999 9999 9999 9999 9999 24 502 504 522 456 610 410 570 9999 9999 9999 9999 9999 527 596 516 485 609 486 576 9999 9999 9999 9999 9999 25 440 570 431 471 666 469 473 9999 9999 9999 9999 9999 520 448 397 540 633 712 507 9999 9999 9999 9999 9999 26 310 442 345 510 380 470 570 9999 9999 9999 9999 9999 320 470 494 460 530 460 520 9999 9999 9999 9999 9999 27 382 530 556 530 490 511 517 9999 9999 9999 9999 9999 441 556 512 430 521 475 420 9999 9999 9999 9999 9999 28 466 486 568 467 420 506 525 9999 9999 9999 9999 9999 400 610 520 463 466 430 436 9999 9999 9999 9999 9999 29 439 473 386 440 420 440 443 9999 9999 9999 9999 9999 467 436 421 504 380 450 362 9999 9999 9999 9999 9999 30 500 448 480 390 430 489 9999 9999 9999 9999 9999 485 396 274 468 450 447 9999 9999 9999 9999 9999 31 500 455 472 518 9999 9999 9999 484 542 451 550 9999 9999 9999 Mean 477 482 487 467 451 448 463 468 479 482 481 478 469 494 488 456 464 442 467 463 472 477 477 474