This wiki contains plots of sky brightness for January and February 2010.  The selection was for exposures > 25s long, things that were not DARK or FLAT, with a background > 0 and from ota 33.

There are no other cuts.

The colors are as follows:
{{{
#!html
<b style="color: #00FF00">g = green</b>
<br>

<b style="color: red">r = red</b>

<br>
<b style="color: blue">i = blue</b>
<br>
<b style="color: cyan">z = cyan</b>
<br>
<b style="color: #FF00FF">y = purple</b>


}}}