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Keying Great Lakes Water Levels

Keying Great Lakes Water Levels. Stephen D. Lyles. NATIONAL OCEAN SERVICE Center for Operational Oceanographic Products and Services (CO-OPS). Water Levels on the Great Lakes. Published Since 1860 Uses of Archived data. Great Lakes NWLON Stations. Project Goals. Digitize Archived Data

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Keying Great Lakes Water Levels

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  1. Keying Great Lakes Water Levels Stephen D. Lyles NATIONAL OCEAN SERVICE Center for Operational Oceanographic Products and Services (CO-OPS)

  2. Water Levels on the Great Lakes • Published Since 1860 • Uses of Archived data

  3. Great Lakes NWLON Stations

  4. Project Goals • Digitize Archived Data • Data available on CO-OPS Web Page

  5. Data Set Description • Quantity 1,400 Station Years of data (12.9 million entries) • Media Water Level Books Tabular Pages

  6. Required Rescue Activity • Key Data • Quality Control Check • Compute Means • Determine Maximum & Minimum Values • Compare computed data to keyed data

  7. Deliverables • Data Files on CD Hourly Daily Mean Monthly Mean Maximum Values Minimum Values Discrepancy Report

  8. Data Format - Hourly Values • File Name - gggg_yyy.HLY e.g. 5014_955.HLY • Line of Data 1 2 3 123456789012345678901234567890 1955 1 31 24 581.00 1955 2 1 1 581.13

  9. Data Format - Daily Mean Values • File Name - gggg_yyy.DLY e.g. 5014_955.DLY • Line of Data 1 2 1234567890123456789012345 1955 1 31 581.10 1955 2 1 581.16

  10. Data Format - Monthly Mean Values • File Name - gggg_yyy.MON e.g. 5014_955.MON • Line of Data 1 2 12345678901234567890 1955 1 581.20 1955 2 581.00

  11. Data Format - Maximum Values • File Name - gggg_yyy.MAX e.g. 5014_955.MAX • Line of Data 1 2 3 123456789012345678901234567890 1955 1 3 228 581.77 1955 2 12 1125 581.51

  12. Data Format - Minimum Values • File Name - gggg_yyy.MIN e.g. 5014_955.MIN • Line of Data 1 2 3 123456789012345678901234567890 1955 1 21 1340 580.37 1955 2 5 1310 580.22

  13. Data Format - Discrepancy Report • File Name - gggg_yyy.REP e.g. 5014_955.REP • Line of Data 1 2 9 12345678901234567890123...4567890 1955 11 Descriptive Text

  14. NOS Responsibilities • Resolve Discrepancies • Adjust Datum • Access via WEB

  15. Projected Costs • 1 COTR (80 hrs. @ $44.52) $3,562 • 1 Preparer (80 hrs. @ $29.47) 2,358 • 2 Reviewer (500 hrs. @ $19.25) 9,625 • Keying 400,000 Total $415,545

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