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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Fabio,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I just saw your request from Nov. 2008 for measurements with
and without snow cover. Here are some measurements using a standard SQM (not
SQM-L) pointed at the zenith from <st1:place w:st="on"><st1:City w:st="on">Arlington</st1:City>,
 <st1:State w:st="on">MA</st1:State></st1:place>, at 42:24.7N 71:10.5W. This is
about 7 miles from the center of <st1:place w:st="on"><st1:City w:st="on">Boston</st1:City>,
 <st1:State w:st="on">MA</st1:State></st1:place>. All times are local standard
(EST). I recorded the transparency as &#8220;very good&#8221; in all cases. All
measurements are based on 5 consecutive readings, possibly discarding the first
reading if it is clearly out of line.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Arlington has full-cutoff street lighting, which exaggerates
the effect of snow.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2007/11/16 19:40 18.35+-.02<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2007/11/27 20:08 18.21+-.02 -- 84% Moon alt 70, shield moonlight
from SQM with hand<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2007/12/16 20:40 17.70+-.01 -- 40% Moon alt 26, fresh snow
with ice glaze, unusually bright<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2008/02/28 20:21 18.08+-.03 &#8211; new snow<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2008/03/05 20:53 18.46+-.02<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2008/12/03 19:19 18.38+-.08 &#8211; 32% Moon alt 20<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2009/01/03 19:45 17.78+-.04 -- 45% Moon alt 41, extensive
snow cover<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp; - Tony Flanders<o:p></o:p></span></font></p>

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