<P>hi all,</P>
<P>I tried to get the DNI(direct normal irradiance/insolation), however, from the Tm2 file I can only choose to output direct normal radiation and direct normal illuminance. could anyone tell me how to transform the following data into dni? Btw, whats the unit for the data below? I want to get DNi in W/m2 thanks.</P>
<P>      hour   DNradiation   DN illuminance</P>
<P></P>
<TABLE style="WIDTH: 162pt; BORDER-COLLAPSE: collapse" border="0" cellSpacing="0" cellPadding="0" width="216">
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<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; WIDTH: 54pt; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" width="72" align="right"><FONT size="3">129</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; WIDTH: 54pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" width="72" align="right"><FONT size="3">910.8</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; WIDTH: 54pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" width="72" align="right"><FONT size="3">19000</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">130</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">1656</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">41000</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">131</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">2192.4</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">58200</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">132</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">2149.2</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">57800</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">133</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">2476.8</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">66700</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">134</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">2404.8</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">63800</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">135</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">1900.8</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">46900</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">136</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">1314</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">27800</FONT></TD></TR>
<TR style="HEIGHT: 13.5pt" height="18">
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" height="18" align="right"><FONT size="3">137</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">295.2</FONT></TD>
<TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; BACKGROUND-COLOR: transparent; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0" align="right"><FONT size="3">2800</FONT></TD></TR></TBODY></TABLE>Jingxiao Han