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) 1893 Jan. Feb. Mar. Apr. May June July Aug. Sep. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sep. Oct. Nov. Dec. 1 552 566 527 538 569 508 9999 9999 9999 9999 600 532 535 545 522 562 600 526 9999 9999 9999 9999 570 565 2 520 578 532 544 530 535 9999 9999 9999 9999 610 551 576 586 542 534 468 560 9999 9999 9999 9999 592 534 3 620 580 552 546 545 525 9999 9999 9999 9999 556 500 590 564 522 580 546 548 9999 9999 9999 9999 613 565 4 534 545 533 550 600 510 9999 9999 9999 9999 584 522 534 563 568 540 556 507 9999 9999 9999 9999 543 561 5 534 588 538 534 543 562 9999 9999 9999 9999 534 537 566 560 574 537 575 539 9999 9999 9999 9999 584 555 6 608 530 537 578 576 9999 9999 9999 9999 9999 591 575 618 532 510 614 464 498 9999 9999 9999 9999 546 652 7 583 528 551 579 486 9999 9999 9999 9999 9999 490 538 542 568 661 554 504 9999 9999 9999 9999 9999 522 562 8 556 613 528 525 516 9999 9999 9999 9999 9999 532 573 564 525 545 498 538 9999 9999 9999 9999 9999 584 593 9 576 580 620 534 544 9999 9999 9999 9999 9999 613 581 584 598 576 552 605 9999 9999 9999 9999 9999 602 615 10 595 578 542 568 572 9999 9999 9999 9999 9999 538 570 603 536 530 536 578 9999 9999 9999 9999 9999 572 541 11 569 620 561 520 531 9999 9999 9999 9999 9999 570 576 560 547 614 538 500 9999 9999 9999 9999 9999 563 575 12 593 568 620 550 502 9999 9999 9999 9999 9999 528 592 604 522 567 588 508 9999 9999 9999 9999 9999 593 546 13 550 533 537 590 545 9999 9999 9999 9999 9999 590 538 570 522 417 571 550 9999 9999 9999 9999 9999 531 532 14 563 514 530 545 550 9999 9999 9999 9999 9999 532 549 532 578 569 566 564 9999 9999 9999 9999 9999 562 595 15 568 570 571 560 565 9999 9999 9999 9999 9999 576 561 577 576 610 510 530 9999 9999 9999 9999 9999 562 558 16 533 548 608 498 567 9999 9999 9999 9999 9999 556 572 528 544 570 508 572 9999 9999 9999 9999 9999 551 600 17 526 585 582 554 578 9999 9999 9999 9999 9999 584 582 527 561 580 539 542 9999 9999 9999 9999 9999 556 561 18 557 578 582 555 557 9999 9999 9999 9999 9999 558 563 540 570 556 575 532 9999 9999 9999 9999 9999 564 595 19 539 562 558 587 567 9999 9999 9999 9999 9999 514 575 510 560 531 565 546 9999 9999 9999 9999 9999 610 610 20 512 562 554 600 628 9999 9999 9999 9999 9999 562 580 569 550 554 567 558 9999 9999 9999 9999 9999 574 576 21 536 592 536 548 533 9999 9999 9999 9999 9999 581 550 524 580 550 551 527 9999 9999 9999 9999 9999 558 552 22 534 575 549 530 541 9999 9999 9999 9999 555 572 558 548 562 545 528 526 9999 9999 9999 9999 9999 572 519 23 528 536 540 646 550 9999 9999 9999 9999 580 568 536 570 535 536 575 498 9999 9999 9999 9999 580 584 536 24 602 528 550 480 583 9999 9999 9999 9999 601 588 483 527 516 514 494 530 9999 9999 9999 9999 566 588 572 25 534 510 508 542 565 9999 9999 9999 9999 605 578 574 554 512 490 550 550 9999 9999 9999 9999 588 595 540 26 546 545 548 540 638 9999 9999 9999 9999 595 570 531 570 566 555 541 570 9999 9999 9999 9999 570 594 547 27 517 564 592 590 550 9999 9999 9999 9999 582 553 554 554 570 560 567 581 9999 9999 9999 9999 553 582 607 28 610 564 550 550 540 9999 9999 9999 9999 563 577 567 544 552 538 546 514 9999 9999 9999 9999 545 572 556 29 546 548 550 596 9999 9999 9999 9999 559 546 544 521 636 563 536 9999 9999 9999 9999 538 570 568 30 545 652 602 602 9999 9999 9999 9999 525 571 559 526 572 512 540 9999 9999 9999 9999 578 557 507 31 498 507 516 9999 9999 563 521 570 512 552 9999 9999 562 570 Mean 554 562 553 554 555 554 558 569 575 570 564 553 566 554 554 549 546 541 543 556 566 568 572 564