2.2.2 spase://VMO/NumericalData/WDC/Gnangara/Magnetometer/PT1H/WDC_FORMAT Gnangara Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Gnangara 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: Australian Geological Survey Organisation 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/Liejun.Wang 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/Gnangara/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/Gnangara/Magnetometer MagneticField 1957-07-01T00:00:00.000 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 Gnangara WDC Station Code: GNA 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 Gnangara 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 Gnangara Horzontal Magnetic Field Magnitude PT1H nT 10^9 >T Cylindrical CGM 0 70000 9999 Projection.IJ Magnetic North-South Horizontal Magnetic Field Component X Gnangara 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 Gnangara 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 Gnangara 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 Gnangara Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic GNA 1957 D H Z GNA 1958 D H Z GNA 1959 D H Z GNA 1960 D H Z GNA 1961 D H Z GNA 1962 D H Z GNA 1963 D H Z GNA 1964 D H Z GNA 1965 D H Z GNA 1966 D H Z GNA 1967 D H Z GNA 1968 D H Z GNA 1969 D H Z GNA 1970 D H Z GNA 1971 D H Z GNA 1972 D H Z GNA 1973 D H Z GNA 1974 D H Z GNA 1975 D H Z GNA 1976 D H Z GNA 1977 D H Z GNA 1978 D H Z GNA 1979 D H Z GNA 1980 D H Z GNA 1981 D H Z GNA 1982 D H Z GNA 1983 D H Z GNA 1984 D H Z GNA 1985 D H Z GNA 1986 D H Z GNA 1987 D H Z GNA 1988 D H Z GNA 1989 D H Z GNA 1990 D H Z GNA 1992 X Y Z F GNA 1993 X Y Z F GNA 1994 X Y Z F GNA 1995 X Y Z F GNA 1996 X Y Z F GNA 1997 X Y Z F GNA 1998 X Y Z F GNA 1999 X Y Z F GNA 2000 X Y Z F GNA 2001 X Y Z F GNA 2002 X Y Z F GNA 2003 X Y Z F GNA 2004 X Y Z F GNA 2005 X Y Z F GNA 2006 X Y Z F GNA 2007 X Y Z F GNA 2008 X Y Z F GNA 2009 X Y Z F GNA 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