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) 1870 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 9999 9999 9999 9999 9999 9999 9999 9999 680 715 705 714 9999 9999 9999 9999 9999 9999 9999 9999 695 717 728 715 2 9999 9999 9999 9999 9999 9999 9999 9999 705 726 720 724 9999 9999 9999 9999 9999 9999 9999 9999 705 722 726 700 3 9999 9999 9999 9999 9999 9999 9999 9999 700 720 705 718 9999 9999 9999 9999 9999 9999 9999 9999 705 713 713 730 4 9999 9999 9999 9999 9999 9999 9999 9999 720 711 705 701 9999 9999 9999 9999 9999 9999 9999 9999 675 716 717 718 5 9999 9999 9999 9999 9999 9999 9999 9999 703 712 700 695 9999 9999 9999 9999 9999 9999 9999 9999 703 705 710 715 6 9999 9999 9999 9999 9999 9999 9999 9999 704 705 690 721 9999 9999 9999 9999 9999 9999 9999 9999 702 705 700 740 7 9999 9999 9999 9999 9999 9999 9999 9999 701 706 715 720 9999 9999 9999 9999 9999 9999 9999 9999 706 706 718 731 8 9999 9999 9999 9999 9999 9999 9999 9999 715 700 730 720 9999 9999 9999 9999 9999 9999 9999 9999 700 702 733 727 9 9999 9999 9999 9999 9999 9999 9999 9999 700 711 744 725 9999 9999 9999 9999 9999 9999 9999 9999 686 700 731 728 10 9999 9999 9999 9999 9999 9999 9999 9999 698 720 719 729 9999 9999 9999 9999 9999 9999 9999 9999 690 732 739 718 11 9999 9999 9999 9999 9999 9999 9999 9999 701 705 709 715 9999 9999 9999 9999 9999 9999 9999 9999 690 703 727 731 12 9999 9999 9999 9999 9999 9999 9999 9999 699 732 709 741 9999 9999 9999 9999 9999 9999 9999 9999 700 718 707 714 13 9999 9999 9999 9999 9999 9999 9999 9999 707 710 699 695 9999 9999 9999 9999 9999 9999 9999 9999 675 714 703 714 14 9999 9999 9999 9999 9999 9999 9999 9999 702 685 703 690 9999 9999 9999 9999 9999 9999 9999 9999 695 681 709 711 15 9999 9999 9999 9999 9999 9999 9999 9999 731 711 702 698 9999 9999 9999 9999 9999 9999 9999 9999 708 725 693 712 16 9999 9999 9999 9999 9999 9999 9999 9999 707 718 687 686 9999 9999 9999 9999 9999 9999 9999 9999 677 705 708 704 17 9999 9999 9999 9999 9999 9999 9999 9999 710 695 722 736 9999 9999 9999 9999 9999 9999 9999 9999 688 700 719 665 18 9999 9999 9999 9999 9999 9999 9999 9999 716 695 739 721 9999 9999 9999 9999 9999 9999 9999 9999 700 704 731 710 19 9999 9999 9999 9999 9999 9999 9999 9999 705 714 718 701 9999 9999 9999 9999 9999 9999 9999 9999 702 717 706 700 20 9999 9999 9999 9999 9999 9999 9999 9999 695 700 752 706 9999 9999 9999 9999 9999 9999 9999 9999 710 733 680 705 21 9999 9999 9999 9999 9999 9999 9999 9999 740 722 729 703 9999 9999 9999 9999 9999 9999 9999 9999 686 729 732 709 22 9999 9999 9999 9999 9999 9999 9999 9999 735 715 717 683 9999 9999 9999 9999 9999 9999 9999 9999 722 724 729 674 23 9999 9999 9999 9999 9999 9999 9999 9999 724 720 712 698 9999 9999 9999 9999 9999 9999 9999 9999 741 717 732 718 24 9999 9999 9999 9999 9999 9999 9999 9999 750 710 711 695 9999 9999 9999 9999 9999 9999 9999 9999 701 702 675 705 25 9999 9999 9999 9999 9999 9999 9999 9999 838 776 729 715 9999 9999 9999 9999 9999 9999 9999 9999 675 725 729 705 26 9999 9999 9999 9999 9999 9999 9999 9999 745 739 726 705 9999 9999 9999 9999 9999 9999 9999 9999 728 734 733 715 27 9999 9999 9999 9999 9999 9999 9999 9999 720 737 725 710 9999 9999 9999 9999 9999 9999 9999 9999 711 725 734 715 28 9999 9999 9999 9999 9999 9999 9999 9999 722 720 729 710 9999 9999 9999 9999 9999 9999 9999 9999 707 740 733 710 29 9999 9999 9999 9999 9999 9999 9999 720 715 710 705 9999 9999 9999 9999 9999 9999 9999 716 724 704 715 30 9999 9999 9999 9999 9999 9999 9999 710 715 700 705 9999 9999 9999 9999 9999 9999 9999 735 720 705 725 31 9999 9999 9999 9999 9999 720 705 9999 9999 9999 9999 9999 723 700 Mean 9999 9999 9999 9999 9999 9999 9999 9999 713 713 715 710 9999 9999 9999 9999 9999 9999 9999 9999 701 716 717 712