COSMIC RAY RESEARCH UNIT, POTCHEFSTROOM UNIVERSITY, POTCHEFSTROOM SOUTH AFRICA 3NM64 NEUTRON MONITOR SANAE, ANTARCTICA COORDINATES 70 19 S, 02 21 W ALTITUDE 52 METERS BAROMETRIC PRESSURE IN QUANTITIES OF 0.1 mB DATE DAY UT 01 02 03 04 05 06 07 08 09 10 11 12 DAILY MEANS 13 14 15 16 17 18 19 20 21 22 23 24 1 12 1987 335 9847 9845 9843 9843 9842 9841 9841 9842 9841 9840 9838 9837 9836 9834 9832 9830 9829 9827 9829 9831 9831 9832 9831 9832 9836.4 24 2 12 1987 336 9829 9827 9826 9825 9827 9827 9829 9831 9833 9834 9834 9835 9837 9839 9841 9843 9844 9847 9850 9855 9858 9862 9865 9869 9840.3 24 3 12 1987 337 9873 9876 9877 9880 9881 9884 9886 9890 9892 9894 9894 9893 9893 9893 9892 9892 9891 9889 9888 9887 9885 9886 9885 9885 9886.9 24 4 12 1987 338 9884 9884 9880 9879 9878 9878 9879 9880 9881 9882 9882 9881 9881 9878 9876 9873 9872 9873 9872 9872 9872 9872 9873 9874 9877.3 24 5 12 1987 339 9874 9875 9875 9877 9881 9883 9885 9890 9894 9898 9900 9902 9905 9907 9906 9906 9908 9909 9910 9913 9915 9916 9918 9919 9898.6 24 6 12 1987 340 9919 9918 9915 9914 9913 9915 9915 9917 9917 9915 9912 9910 9908 9907 9904 9902 9901 9900 9898 9897 9897 9898 9898 9899 9907.9 24 7 12 1987 341 9899 9899 9901 9903 9905 9908 9910 9913 9915 9916 9918 9919 9920 9920 9920 9920 9919 9921 9924 9925 9925 9927 9928 9927 9915.9 24 8 12 1987 342 9928 9928 9928 9929 9930 9931 9931 9932 9933 9934 9933 9933 9932 9929 9927 9925 9925 9926 9928 9927 9926 9926 9924 9924 9928.7 24 9 12 1987 343 9925 9925 9928 9929 9930 9932 9936 9938 9937 9939 9941 9943 9945 9945 9945 9946 9946 9946 9946 9947 9944 9944 9943 9941 9939.2 24 10 12 1987 344 9940 9937 9934 9931 9929 9927 9927 9926 9926 9925 9924 9924 9926 9927 9928 9928 9929 9930 9933 9937 9939 9941 9942 9943 9931.4 24 11 12 1987 345 9943 9942 9940 9938 9935 9931 9927 9922 9917 9912 9907 9901 9893 9886 9877 9870 9863 9856 9852 9846 9840 9834 9829 9826 9891.1 24 12 12 1987 346 9823 9820 9815 9811 9807 9803 9800 9797 9794 9790 9785 9781 9776 9770 9764 9758 9752 9748 9743 9738 9734 9729 9724 9721 9774.3 24 13 12 1987 347 9718 9714 9713 9712 9713 9716 9718 9720 9721 9724 9729 9736 9746 9755 9764 9771 9778 9785 9792 9798 9804 9809 9813 9817 9752.8 24 14 12 1987 348 9822 9828 9832 9839 9844 9849 9853 9860 9864 9869 9872 9874 9876 9878 9879 9879 9881 9881 9882 9881 9877 9875 9872 9872 9864.1 24 15 12 1987 349 9872 9870 9867 9863 9859 9856 9851 9851 9847 9842 9838 9832 9826 9820 9812 9803 9795 9789 9785 9782 9779 9775 9769 9765 9822.8 24 16 12 1987 350 9760 9755 9750 9746 9741 9741 9738 9736 9735 9734 9731 9729 9730 9730 9727 9726 9726 9727 9730 9732 9734 9735 9735 9736 9736.0 24 17 12 1987 351 9736 9736 9736 9737 9738 9741 9742 9746 9749 9751 9752 9753 9757 9763 9770 9776 9782 9788 9796 9801 9805 9809 9813 9817 9766.4 24 18 12 1987 352 9819 9821 9824 9827 9830 9834 9835 9836 9838 9835 9834 9833 9830 9828 9827 9823 9819 9815 9812 9809 9807 9803 9801 9800 9822.5 24 19 12 1987 353 9796 9794 9792 9790 9791 9792 9794 9793 9792 9790 9789 9790 9791 9790 9790 9791 9792 9794 9796 9799 9800 9803 9806 9809 9794.3 24 20 12 1987 354 9810 9814 9818 9819 9820 9823 9827 9831 9834 9837 9840 9842 9845 9846 9847 9847 9850 9852 9855 9858 9861 9863 9864 9866 9840.4 24 21 12 1987 355 9868 9869 9870 9869 9871 9872 9872 9873 9872 9872 9871 9869 9866 9864 9863 9860 9856 9854 9850 9848 9845 9841 9838 9834 9861.1 24 22 12 1987 356 9831 9827 9823 9819 9815 9813 9813 9812 9811 9808 9805 9802 9798 9794 9792 9786 9783 9782 9781 9778 9774 9769 9763 9758 9797.4 24 23 12 1987 357 9753 9748 9744 9741 9738 9737 9739 9740 9741 9741 9742 9743 9743 9743 9746 9743 9742 9740 9742 9743 9744 9748 9752 9755 9743.7 24 24 12 1987 358 9757 9760 9762 9766 9770 9772 9775 9780 9785 9790 9795 9799 9803 9807 9811 9814 9818 9821 9826 9832 9836 9819 9829 9836 9798.5 24 25 12 1987 359 9849 9851 9854 9857 9861 9863 9867 9871 9874 9874 9874 9876 9875 9876 9876 9876 9876 9877 9876 9877 9876 9875 9875 9875 9870.0 24 26 12 1987 360 9874 9874 9873 9873 9872 9872 9872 9869 9866 9863 9862 9862 9859 9854 9852 9848 9844 9840 9838 9838 9838 9839 9840 9842 9856.8 24 27 12 1987 361 9843 9844 9846 9849 9852 9857 9860 9863 9866 9870 9872 9872 9872 9873 9872 9870 9869 9867 9866 9865 9863 9863 9864 9865 9862.6 24 28 12 1987 362 9868 9869 9869 9870 9870 9870 9870 9870 9871 9870 9868 9866 9865 9863 9860 9857 9855 9854 9854 9853 9852 9850 9848 9846 9862.0 24 29 12 1987 363 9841 9838 9834 9831 9828 9827 9825 9822 9820 9816 9812 9808 9806 9805 9803 9802 9801 9802 9804 9803 9802 9803 9803 9803 9814.1 24 30 12 1987 364 9803 9806 9808 9809 9811 9812 9812 9812 9810 9809 9805 9802 9797 9792 9788 9784 9780 9777 9774 9771 9768 9764 9761 9758 9792.2 24 31 12 1987 365 9755 9752 9750 9749 9750 9754 9761 9767 9772 9780 9786 9792 9799 9804 9807 9808 9810 9813 9816 9820 9824 9827 9830 9830 9789.8 24 MONTHLY MEANS 9841 9840 9840 9840 9840 9841 9842 9843 9843 9844 9843 9843 9843 9843 9842 9841 9840 9840 9840 9841 9840 9840 9840 9840 9841.2 P-12