<html> <head> <style> .hmmessage P { margin:0px; padding:0px } body.hmmessage { font-size: 10pt; font-family:Verdana } </style> </head> <body class='hmmessage'> Dear all,<BR>  <BR> what is the effect of longitude and latitude on power output of the vertical PV windows toward the west.<BR>  <BR> for example, I'm simulating the vertical PV window toward the west located at London, fisrtly I get a power output from the original weather file, then keep anything of London weather file unchanged but change London' longitude, then what will happen for power output?<BR>  <BR> regards,<BR> paul<RTE_TEXT></RTE_TEXT><BR><br /><hr />MSN保护盾，十八般武艺保障MSN安全！ <a href='http://im.live.cn/safe/' target='_new'>现在就下载！</a></body> </html>