Some squares in my grade book are brown. What does this mean?

This gives a description of what happens when the teacher overrides the Moodle averaging utility.

Some squares in my grade book are brown. What does this mean? Help with History

Created: Friday, 25 June 2010, 8:30 PM by Bill Junkin
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3 Picture of Bill JunkinBill Junkin 8:50 PM
16 July 2010
2 Picture of Bill JunkinBill Junkin 8:39 PM
25 June 2010
1 Picture of Bill JunkinBill Junkin 8:30 PM
25 June 2010