Space Weather Data Documentation

Data used:
1. Files:
  Contains: BSRN, ND, 3-hourly K_p, 3-hourly A_p, C_p, C₉, ISN, F10.7_Adj, Q
  
  Updated: Monthly (a little over one month after end of the month)
  Each month a yyyy.vm file is produced, where yyyy is the year and m is the month. When the year is complete, file becomes simply yyyy.
2. Files:
  Contains: F10.7_Obs from 1947 Jan 01 until end of previous month
  
  Updated: Monthly (end of month)
3. Files:
  Contains: 3-hourly K_p for the current quarter to date (previous quarters also available)
  
  Updated: Every 3 hours
4. Files:
  Contains: Daily F10.7_Adj, ISN for the current quarter to date (previous quarters also available)
  
  Updated: Daily
5. Files:
  Contains: 45-day forecast of daily A_p and F10.7_Adj
  
  Updated: Daily
6. Files:
  Contains: Monthly ISN and F10.7_Adj for approximately two years
  
  Updated: Monthly
Data documentation can be found at:
- Geomagnetic and Solar Activity Indices
- Penticton Solar Radio Flux Values
- 2800 MHz Solar Flux
- Users Guide to the Preliminary Report and Forecast of Solar Geophysical Data
Process:
1. Observed data is produced by combining Sources 1 and 2 with Sources 3 and 4 to the current date. Missing F10.7_Adj values are estimated using linear interpolation (Q=4). Missing F10.7_Obs values are estimated using F10.7_Adj, adjusted to Earth orbital radius.
2. Daily predicted data (A_p and F10.7_Adj) is produced using Source 5. F10.7_Obs values are estimated using F10.7_Adj, adjusted to Earth orbital radius.
3. Monthly predicted data (F10.7_Adj) is produced using Source 6. F10.7_Obs values are estimated using F10.7_Adj, adjusted to Earth orbital radius.
4. Monthly fit data (F10.7_Adj) is produced using the fit specified by the MONTHLY_FIT_TYPE keyword. F10.7_Obs values are estimated using F10.7_Adj, adjusted to Earth orbital radius.
5. Missing values are left blank.
Keywords:
- DATATYPE CssiSpaceWeather
  Specifies the data format type for the file.
- VERSION major.minor
  Provides major and minor version of current data format.
- UPDATED yyyy Mon dd hh:mm:ss UTC
  Provides UTC date and time of current update.
- NUM_OBSERVED_POINTS number
  Indicates number of records of data in the Observed Data section.
- BEGIN OBSERVED
  END OBSERVED
  Marks beginning and end of the Observed Data section.
- NUM_DAILY_PREDICTED_POINTS number
  Indicates number of records of data in the Daily Predicted Data section.
- BEGIN DAILY_PREDICTED
  END DAILY_PREDICTED
  Marks beginning and end of the Daily Predicted Data section.
- NUM_MONTHLY_PREDICTED_POINTS number
  Indicates number of records of data in the Monthly Predicted Data section.
- BEGIN MONTHLY_PREDICTED
  END MONTHLY_PREDICTED
  Marks beginning and end of the Monthly Predicted Data section. Data is output for the first day of the month.
- NUM_MONTHLY_FIT_POINTS number
  Indicates number of records of data in the Monthly Predicted Data section.
- MONTHLY_FIT_TYPE fit
  Specifies polynomial or other fit type used to estimate F10.7_Adj.
- BEGIN MONTHLY_FIT
  END MONTHLY_FIT
  Marks beginning and end of the Monthly Fit Data section. Data is output for the first day of the month.

Data Format:

----------------------------------------------------------------------------------------------------------------------------------
FORMAT(I4,I3,I3,I5,I3,8I3,I4,8I4,I4,F4.1,I2,I4,F6.1,I2,5F6.1)
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Column
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111111111111111111111111111111
0000000001111111111222222222233333333334444444444555555555566666666667777777777888888888899999999990000000000111111111122222222223
1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
----------------------------------------------------------------------------------------------------------------------------------
                                                                                              Adj     Adj   Adj   Obs   Obs   Obs 
yyyy mm dd BSRN ND Kp Kp Kp Kp Kp Kp Kp Kp Sum Ap  Ap  Ap  Ap  Ap  Ap  Ap  Ap  Avg Cp C9 ISN F10.7 Q Ctr81 Lst81 F10.7 Ctr81 Lst81
----------------------------------------------------------------------------------------------------------------------------------
yyyy mm dd nnnn nn nn nn nn nn nn nn nn nn nnn nnn nnn nnn nnn nnn nnn nnn nnn nnn n.n n nnn nnn.n n nnn.n nnn.n nnn.n nnn.n nnn.n
----------------------------------------------------------------------------------------------------------------------------------
2000 01 01 2272  7 53 47 40 33 43 30 43 37 327  56  39  27  18  32  15  32  22  30 1.3 6  48 125.6 0 160.5 175.0 129.9 165.6 179.0
----------------------------------------------------------------------------------------------------------------------------------

Columns	Description
001-004	Year
006-007	Month (01-12)
009-010	Day
012-015	Bartels Solar Rotation Number. A sequence of 27-day intervals counted continuously from 1832 Feb 8.
017-018	Number of Day within the Bartels 27-day cycle (01-27).
020-021	Planetary 3-hour Range Index (K_p) for 0000-0300 UT.
023-024	Planetary 3-hour Range Index (K_p) for 0300-0600 UT.
026-027	Planetary 3-hour Range Index (K_p) for 0600-0900 UT.
029-030	Planetary 3-hour Range Index (K_p) for 0900-1200 UT.
032-033	Planetary 3-hour Range Index (K_p) for 1200-1500 UT.
035-036	Planetary 3-hour Range Index (K_p) for 1500-1800 UT.
038-039	Planetary 3-hour Range Index (K_p) for 1800-2100 UT.
041-042	Planetary 3-hour Range Index (K_p) for 2100-0000 UT.
044-046	Sum of the 8 K_p indices for the day expressed to the nearest third of a unit.
048-050	Planetary Equivalent Amplitude (A_p) for 0000-0300 UT.
052-054	Planetary Equivalent Amplitude (A_p) for 0300-0600 UT.
056-058	Planetary Equivalent Amplitude (A_p) for 0600-0900 UT.
060-062	Planetary Equivalent Amplitude (A_p) for 0900-1200 UT.
064-066	Planetary Equivalent Amplitude (A_p) for 1200-1500 UT.
068-070	Planetary Equivalent Amplitude (A_p) for 1500-1800 UT.
072-074	Planetary Equivalent Amplitude (A_p) for 1800-2100 UT.
076-078	Planetary Equivalent Amplitude (A_p) for 2100-0000 UT.
080-082	Arithmetic average of the 8 A_p indices for the day.
084-086	C_p or Planetary Daily Character Figure. A qualitative estimate of overall level of magnetic activity for the day determined from the sum of the 8 A_p indices. C_p ranges, in steps of one-tenth, from 0 (quiet) to 2.5 (highly disturbed).
088-088	C₉. A conversion of the 0-to-2.5 range of the C_p index to one digit between 0 and 9.
090-092	International Sunspot Number. Records contain the Zurich number through 1980 Dec 31 and the International Brussels number thereafter.
094-098	10.7-cm Solar Radio Flux (F10.7) Adjusted to 1 AU. Measured at Ottawa at 1700 UT daily from 1947 Feb 14 until 1991 May 31 and measured at Penticton at 2000 UT from 1991 Jun 01 on. Expressed in units of 10^-22 W/m²/Hz.
100-100	Flux Qualifier. 0 indicates flux required no adjustment; 1 indicates flux required adjustment for burst in progress at time of measurement; 2 indicates a flux approximated by either interpolation or extrapolation; 3 indicates no observation; and 4 indicates CSSI interpolation of missing data.
102-106	Centered 81-day arithmetic average of F10.7 (adjusted).
108-112	Last 81-day arithmetic average of F10.7 (adjusted).
114-118	Observed (unadjusted) value of F10.7.
120-124	Centered 81-day arithmetic average of F10.7 (observed).
126-130	Last 81-day arithmetic average of F10.7 (observed).

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Dr. T.S. Kelso [TS.Kelso@celestrak.com]
Last updated: 2007 October 9 15:15:05 UTC
Accessed 18,344 times since 2000 December 16
Current system time: 2008 July 20 23:29:22 UTC