2.2.2 spase://VMO/NumericalData/WDC/Tucson/Magnetometer/PT1H/WDC_FORMAT Tucson Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Tucson 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: U.S. Geological Survey 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/Carol.A.K.Finn GeneralContact DataProducer spase://SMWG/Person/Jeffrey.J.Love GeneralContact DataProducer spase://SMWG/Person/Jill.Caldwell 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/Tucson/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/Tucson/Magnetometer MagneticField 1909-11-01T00:00:00.000 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 Tucson WDC Station Code: TUC 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 Tucson 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 Tucson Horzontal Magnetic Field Magnitude PT1H nT 10^9 >T Cylindrical CGM 0 70000 9999 Projection.IJ Magnetic North-South Horizontal Magnetic Field Component X Tucson 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 Tucson 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 Tucson 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 Tucson Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic TUC 1909 D H Z TUC 1910 D H Z TUC 1911 D H Z TUC 1912 D H Z TUC 1913 D H Z TUC 1914 D H Z TUC 1915 D H Z TUC 1916 D H Z TUC 1917 D H Z TUC 1918 D H Z TUC 1919 D H Z TUC 1920 D H Z TUC 1921 D H Z TUC 1922 D H Z TUC 1923 D H Z TUC 1924 D H Z TUC 1925 D H Z TUC 1926 D H Z TUC 1927 D H Z TUC 1928 D H Z TUC 1929 D H Z TUC 1930 D H Z TUC 1931 D H Z TUC 1932 D H Z TUC 1933 D H Z TUC 1934 D H Z TUC 1935 D H Z TUC 1936 D H Z TUC 1937 D H Z TUC 1938 D H Z TUC 1939 D H Z TUC 1940 D H Z TUC 1941 D H Z TUC 1942 D H Z TUC 1943 D H Z TUC 1944 D H Z TUC 1945 D H Z TUC 1946 D H Z TUC 1947 D H Z TUC 1948 D H Z TUC 1949 D H Z TUC 1950 D H Z TUC 1951 D H Z TUC 1952 D H Z TUC 1953 D H Z TUC 1954 D H Z TUC 1955 D H Z TUC 1956 D H Z TUC 1957 D H Z TUC 1958 D H Z TUC 1959 D H Z TUC 1960 D H Z TUC 1961 D H Z TUC 1962 D H Z TUC 1963 D H Z TUC 1964 D H Z TUC 1965 D H Z TUC 1966 D H Z TUC 1967 D H Z TUC 1968 D H Z TUC 1969 D H Z TUC 1970 D H Z TUC 1971 D H Z TUC 1972 D H Z TUC 1973 D H Z TUC 1974 D H Z TUC 1975 D H Z TUC 1976 D H Z TUC 1977 D H Z TUC 1978 D H Z TUC 1979 D H Z TUC 1980 D H Z TUC 1981 D H Z TUC 1982 D H Z TUC 1983 D H Z F TUC 1984 D H Z F TUC 1985 D H Z F TUC 1986 D H Z F TUC 1987 D H Z F TUC 1988 D H Z F TUC 1989 D H Z F TUC 1990 D H Z F TUC 1991 D H Z F TUC 1992 D H Z F TUC 1993 D H Z F TUC 1994 D H Z F TUC 1995 D H Z F TUC 1996 D H Z F TUC 1997 D H Z F TUC 1998 D H Z F TUC 1999 D H Z F TUC 2000 D H Z F TUC 2001 D H Z F TUC 2002 D H Z F TUC 2003 D H Z F TUC 2004 X Y Z F TUC 2005 X Y Z F TUC 2006 X Y Z F TUC 2007 X Y Z F TUC 2008 X Y Z F TUC 2009 X Y Z F TUC 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