SUMMER MEAN VALUES FOR DISTURBED DAYS CHICHIJIMA YEAR D I H X Y Z F Deg Min Deg Min nT nT nT nT nT 1973 -3 3.2 36 39.6 32538 32491 -1733 24218 40561 1974 -3 4.5 36 38.5 32546 32499 -1745 24208 40561 1975 -3 4.3 36 35.2 32582 32535 -1745 24186 40577 1976 -3 5.5 36 33.1 32604 32556 -1758 24172 40587 1977 -3 6.2 36 30.5 *1 32637 32588 -1766 24158 *1 40605 *1 1978 -3 8.6 36 31.1 32619 32570 -1788 24155 40588 1979 -3 7.9 36 27.2 *2 32675 *2 32626 *2 -1785 *2 24139 40624 *2 1980 -3 8.8 36 25.5 32706 32657 -1795 24135 40648 1981 -3 10.9 36 27.2 32682 32632 -1814 24143 40633 1982 -3 12.2 36 27.3 32695 32643 -1827 24153 40649 1983 -3 12.3 36 27.5 32717 32665 -1829 24173 40678 1984 -3 15.4 36 29.2 32715 32661 -1858 24196 40690 1985 -3 14.9 36 29.7 32731 32678 -1855 24216 40716 1986 -3 16.9 36 31.2 32736 32681 -1874 24242 40735 1987 - *3 36 32.5 32743 - *3 - *3 24266 40755 1988 - *3 - *4 - *4 - *3 - *3 - *4 - *4 1989 -3 20.1 *3 36 36.8 *4 32731 *4 32676 *3 -1903 *3 24320 *4 40778 *4 1990 -3 21.8 36 39.4 32729 32672 -1920 24356 40797 1991 -3 23.6 36 43.7 32701 32643 -1935 24399 40800 1992 -3 24.7 36 45.6 32723 32664 -1947 24444 40845 1993 -3 25.6 36 48.6 32738 32679 -1956 24500 40891 1994 -3 26.7 36 53.3 32727 32667 -1966 24561 40918 1995 -3 27.9 36 56.8 32728 32667 -1978 24614 40950 1996 -3 29.7 36 59.4 32736 32675 -1995 24659 40984 1997 -3 31.4 37 4.0 32712 32649 -2010 24709 40995 1998 -3 33.6 37 9.5 32660 32597 -2028 24752 40977 1999 -3 34.2 37 11.1 32670 32607 -2034 24784 41007 2000 -3 35.4 37 14.6 32631 32567 -2043 24807 40990 2001 -3 35.5 37 14.1 32645 32581 -2045 24811 41002 2002 -3 35.8 37 15.5 32630 32567 -2047 24819 40995 2003 -3 36.9 37 18.2 32589 32524 -2054 24829 40969 2004 -3 37.5 37 17.4 32599 32533 -2061 24825 40975 2005 -3 38.7 37 19.2 32578 32513 -2071 24836 40966 2006 -3 39.3 37 18.2 32608 32541 -2079 24843 40993 2007 -3 40.9 37 19.2 32612 32545 -2094 24861 41009 2008 -3 42.8 37 20.7 32614 32546 -2112 24886 41024 2009 -3 45.1 37 22.1 32621 32551 -2134 24912 41046 2010 -3 48.3 37 25.1 32608 32536 -2164 24947 41057 2011 -3 52.0 37 27.0 32613 32539 -2199 24980 41080 2012 -3 54.8 37 29.9 32609 32533 -2226 25020 41102 2013 -3 59.6 37 32.1 32617 32537 -2272 25059 41131 2014 -4 2.4 37 31.2 32669 32587 -2302 25085 41187 2015 -4 7.6 37 33.6 32663 32578 -2351 25117 41203 2016 -4 11.1 37 33.0 32704 32617 -2386 25140 41250 2017 -4 15.5 *5 37 33.4 *5 32727 *5 32637 *5 -2430 *5 25165 *5 41285 2018 -4 19.2 37 32.9 32754 32660 -2467 25177 41312 2019 -4 22.7 37 30.4 32797 32702 -2504 25173 41344 2020 -4 26.6 37 27.1 32844 32745 -2544 25158 41375 *6 2021 -4 30.2 37 24.5 32874 32773 -2581 25142 41386 2022 -4 33.1 37 23.2 32891 32788 -2610 25136 41396 *1 From 1977/05/01 to 1977/07/31 are missed. *2 From 1979/07/18 to 1979/08/16 are missed. *3 From 1987/04/01 to 1989/01/22 are missed. *4 From 1988/04/01 to 1989/01/22 are missed. *5 From 2017/08/10 to 2017/09/22 are missed. *6 From 2020/07/01 to 2020/09/29 are missed. Seasons are grouped as follows: Winter : January, February, November, December Equinox : March, April, September, October Summer : May, June, July, August