Lake Michigan Mass Balance

Basic Information about LMMB Data

1. What datasets are available for release?

Currently, about 85% of the total 46 datasets representing Atrazine, PCBs & trans-nonachlor, Mercury, Nutrients, Biology, and the Relative Loads Project are available for release. The table below outlines the datasets available at this time by analyte and matrix.

HINT: Click on the word "Info" within each table cell for more information about a particular dataset (analytes measured, sampling locations, etc.)

2. How can I request LMMB datasets?

To request data from the Lake Michigan Mass Balance Project, see the Data Request page or e-mail Ken Klewin, the Data Manager.

3. How are the data released to secondary users?

• by direct download if requesting selected comma-separated-values (.csv) datasets
• by E-mail attachment – if requesting only a few, small datasets
• by Data CD or other media – contains all requested verified and validated data

4. What file formats are these data in?

The data are exported into several common spreadsheet formats:

• CSV - comma separated values (readable by any spreadsheet)
• WK1 - Lotus
• DBF - dBase
• SD2 – SAS Version 6

      Other file formats available for some datasets:

• TAB – Tab (Hex "09" delimited)
• SAS7BDAT – SAS Version 8
• XLS – Excel

5. Where can I find metadata documentation for this data?

The following metadata information is available:

• Allowable Codes for Data Releases/CD (RDMQ)
• LMMB Methods Compendium
• Original LMMB Data Reporting Standards
• Original Allowable Codes tables

6. When will all the LMMB datasets be ready for release?

Verification and validation of all LMMB datasets should be complete by 2001.

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