2.2.2 spase://VMO/NumericalData/WDC/Niemegk/Magnetometer/PT1H/WDC_FORMAT Niemegk Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Niemegk Magnetometer data, 1-hr time resoluion, in WDC format. Magnetic Field Vector Element List: DHXYZF. Note that the list of magnetic field elements that appear in the data set may change over the course of time. For instance, many stations have shifted from DHZ to the XYZ representation of the magnetic field. The time history listed below summarizes changes in element content. A description of the WDC Data Exchange Format for 1-hr magnetic field data is included at the end of this data product description. Please acknowledge: GFZ, Adolf-Schmidt-Observatorium Niemegk for providing the data observations, and the British Geological Survey, World Data Center for Geomagnetism, Edinburgh for providing access to the data. spase://SMWG/Person/Hans-Joachim.Linthe GeneralContact DataProducer spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact TechnicalContact The Geomagnetic Data Master Catalog at the WDC for Geomagnetism, Edinburgh http://www.wdc.bgs.ac.uk/catalog/intro.html Web site for access to magnetometer data hosted by the World Data Center for Geomagnetism, Edinburgh spase://VMO/NumericalData/WDC/Niemegk/Magnetometer/PT1H spase://SMWG/Repository/UCLA/VMO Online Open The WDC Geomagnetic Data Master Catalog Repository ftp://ftp.nmh.ac.uk/wdc/obsdata/hourval/single_year The Geomagnetic Data Master Catalog hosted by the British Geological Survey, World Data Center for Geomagnetism, Edinburgh. Text ASCII 311710 bytes P1Y Please thank the British Geological Survey, World Data Center, Edinburgh for use of data from the WDC Geomagnetic Data Master Catalog. Calibrated spase://SMWG/Instrument/Ground/Niemegk/Magnetometer MagneticField 1890-01-01T00:00:00.000 2010-12-31T23:00:00.000 Some data gaps may be present. If a gap is present at the beginning or end of the file, the time span start and stop dates could be inaccurate as they are assigned assuming an absence of such gaps. PT1H Earth.Surface ground station magnetometer magnetic field magnetogram Niemegk WDC Station Code: NGK 1-hour WDC Format Universal Time Time Time is expressed using a five column format with the following order: year, month, day, hour, and minute, each stored in interger format. The time columns are the first five columns (1,2,3,4,5) in the flat file. PT1H 5 Universal Time expressed using a 5-column year, month, day, hour, minute representation Year 1 Month 2 Day 3 Hour 4 Minute 5 Temporal Magnetic Field Declination D Niemegk Magnetic Field Vector Declination Angle PT1H Degree 2*pi > Radian Cylindrical CGM -180.0 180.0 9999 DirectionAngle.AzimuthAngle Magnetic Horzontal Magnetic Field Magnitude H Niemegk Horzontal Magnetic Field Magnitude PT1H nT 10^9 >T Cylindrical CGM 0 70000 9999 Projection.IJ Magnetic North-South Horizontal Magnetic Field Component X Niemegk North-South Horizontal Magnetic Field Component, positive Northward PT1H nT 10^9 >T Cartesian CGM -70000 70000 9999 Component.I Magnetic East-West Horizontal Magnetic Field Component Y Niemegk East-West Horizontal Magnetic Field Component, positive Eastward PT1H nT 10^9 >T Cartesian CGM -70000 70000 9999 Component.J Magnetic Vertical Magnetic Field Component Z Niemegk Vertical Magnetic Field Component, positive upward in the Southern hemisphere, positive downward in the Northern hemisphere PT1H nT 10^9 >T Cartesian CGM -70000 70000 9999 Component.K Magnetic Magnetic Field Magnitude F Niemegk Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic NGK 1890 X Y Z NGK 1891 X Y Z NGK 1892 X Y Z NGK 1893 X Y Z NGK 1894 X Y Z NGK 1895 X Y Z NGK 1896 X Y Z NGK 1897 X Y Z NGK 1898 X Y Z NGK 1899 X Y Z NGK 1900 X Y Z NGK 1901 X Y Z NGK 1902 X Y Z NGK 1903 X Y Z NGK 1904 X Y Z NGK 1905 X Y Z NGK 1906 X Y Z NGK 1907 X Y Z NGK 1908 X Y Z NGK 1909 X Y Z NGK 1910 X Y Z NGK 1911 X Y Z NGK 1912 X Y Z NGK 1913 X Y Z NGK 1914 X Y Z NGK 1915 X Y Z NGK 1916 X Y Z NGK 1917 X Y Z NGK 1918 X Y Z NGK 1919 X Y Z NGK 1920 X Y Z NGK 1921 X Y Z NGK 1922 X Y Z NGK 1923 X Y Z NGK 1924 X Y Z NGK 1925 X Y Z NGK 1926 X Y Z NGK 1927 X Y Z NGK 1928 X Y Z NGK 1929 X Y Z NGK 1930 X Y Z NGK 1931 X Y Z NGK 1932 X Y Z NGK 1933 X Y Z NGK 1934 X Y Z NGK 1935 X Y Z NGK 1936 X Y Z NGK 1937 X Y Z NGK 1938 X Y Z NGK 1939 X Y Z NGK 1940 X Y Z NGK 1941 X Y Z NGK 1942 X Y Z NGK 1943 X Y Z NGK 1944 X Y Z NGK 1945 X Y Z NGK 1946 X Y Z NGK 1947 X Y Z NGK 1948 X Y Z NGK 1949 X Y Z NGK 1950 X Y Z NGK 1951 X Y Z NGK 1952 X Y Z NGK 1953 X Y Z NGK 1954 X Y Z NGK 1955 X Y Z NGK 1956 X Y Z NGK 1957 X Y Z NGK 1958 X Y Z NGK 1959 X Y Z NGK 1960 X Y Z NGK 1961 X Y Z NGK 1962 X Y Z NGK 1963 X Y Z NGK 1964 X Y Z NGK 1965 X Y Z NGK 1966 X Y Z NGK 1967 X Y Z NGK 1968 X Y Z NGK 1969 X Y Z NGK 1970 X Y Z NGK 1971 X Y Z NGK 1972 X Y Z NGK 1973 X Y Z NGK 1974 X Y Z NGK 1975 X Y Z NGK 1976 X Y Z NGK 1977 X Y Z NGK 1978 X Y Z NGK 1979 X Y Z NGK 1980 X Y Z F NGK 1981 X Y Z F NGK 1982 X Y Z F NGK 1983 X Y Z F NGK 1984 X Y Z F NGK 1985 X Y Z F NGK 1986 X Y Z F NGK 1987 X Y Z F NGK 1988 X Y Z F NGK 1989 X Y Z F NGK 1990 X Y Z F NGK 1991 X Y Z F NGK 1992 X Y Z F NGK 1993 X Y Z F NGK 1994 X Y Z F NGK 1995 D H Z F NGK 1996 D H Z F NGK 1997 D H Z F NGK 1998 D H Z F NGK 1999 D H Z F NGK 2000 D H Z F NGK 2001 X Y Z F NGK 2002 X Y Z F NGK 2003 X Y Z F NGK 2004 X Y Z F NGK 2005 X Y Z F NGK 2006 X Y Z F NGK 2007 X Y Z F NGK 2008 X Y Z F NGK 2009 X Y Z F NGK 2010 X Y Z F Digital WDC Exchange Format for Observatory Hourly Mean Values -------------------------------------------------------------- Magnetic data organized in 1-year files, with the information coded in ASCII Columns Format Description 1-3 A3 Observatory 3-letter code 4-5 I2 Year Last 2 digits, 1996 = 96. See also columns 15-16. 6-7 I2 Month (01-12) 8 Al Element (D, I, H, X, Y, Z, or F) 9-10 I2 Day of month (01-31) 11-12 A2 Blanks 13 A1 Arbitrary 14 A1 Arbitrary +-- Old Format: -------------------------+ 15-16 I2 Century digits Column 15: International Quiet or Year = 1889, Century digits = 18. Disturbed Days Q=1, D=2 Year = 1996, Century digits = 19. Column 16: Blank for data since 1900, Year = 2014, Century digits = 20. 8 for data before 1900. +----------------------------------------+ 17-20 I4 Tabular base The values are in degrees for D and I, and in hundreds of nanoTeslas for the intensity elements. 21-116 24I4 24 4-digit hourly mean values for the day. The values are in tenth-minutes for D and I, and in nanoTeslas for the intensity elements. The first hourly mean value represents the mean value between 00:00 UT and 01:00 UT, ..., the 24th value represents the mean between 23:00 UT and 24:00 UT. A missing value is identified by 9999. 117-120 I4 Daily Mean If any of the hourly mean values for the day are missing 9999 will appear as the daily mean. 121-122 Record end marker Two chars "cr"= 13 and "nl"= 10. The tabular bases, hourly mean values and daily means are right adjusted and signed if negative. Negative values are identified with a minus sign either adjacent to the first significant digit or in the high-order position of the field. Note: A blank digit will not appear between a (-) sign and the first significant digit. For example, a value may appear as -050 or b-50 but not as -b50 (b=blank). The 25 values in positions 21-120 will have the range -999 to 9998, with 9999 reserved for missing values. The records are sorted according to observatory code, year, month, element, day (positions 1-10). For the intensity elements: hourly value (nanoTeslas) = tab.base*100 + tab.value For the angles D and I: hourly value (Degrees) = tab.base + tab.value/600