Salem, OR. DC Voltage of PV Array on a 45³ Tilt Facing South Salem, OR. Hourly Average DC Voltage of PV Array on a 45³ Tilt Facing South For 2004 to 2013 Latitude: 44.94 degrees Longitude: 123.03 degrees Altitude: 60 meters Mon\Hr 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Total Jan 11.7 11.7 11.7 11.9 50.9 134.7 140.4 139.4 139.6 139.6 140.2 139.7 139.6 125.2 33.8 12.5 12.4 12.3 1407.2 Feb 8.3 8.3 8.4 14.7 106.9 138.3 137.2 135.3 137.1 137.5 136.9 137.2 138.1 137.4 100.8 12.0 8.7 8.5 1511.7 Mar 4.6 4.6 7.8 87.0 137.9 139.4 139.0 136.7 137.9 138.4 138.1 137.3 137.8 138.7 135.6 58.2 4.9 4.7 1688.5 Apr 3.6 5.2 79.3 136.6 136.0 138.3 139.3 136.3 135.4 136.3 136.5 136.2 135.9 134.4 134.0 123.7 22.3 3.7 1873.0 May 3.0 45.5 128.5 131.8 129.8 130.2 130.4 128.4 126.3 127.8 127.7 127.6 128.0 126.3 126.9 128.9 83.8 4.7 1935.7 Jun 3.3 77.2 130.5 128.4 127.4 127.4 126.7 125.3 121.5 122.1 122.0 121.7 122.5 122.0 122.6 127.0 117.2 22.6 1967.3 Jul 2.9 52.6 128.5 130.6 127.0 125.6 124.7 123.4 117.4 118.7 117.9 118.1 118.4 118.3 117.1 124.4 114.1 17.4 1897.0 Aug 2.8 8.4 104.9 138.2 133.5 132.5 132.9 127.4 121.7 122.2 121.7 121.7 122.4 123.1 123.8 127.8 55.8 3.0 1823.8 Sep 2.8 2.9 36.0 132.3 136.8 136.7 133.0 125.6 124.8 123.9 123.6 123.9 124.4 125.9 129.1 66.6 3.7 2.9 1655.0 Oct 2.9 3.0 3.7 78.8 139.6 138.1 135.2 131.4 131.8 130.5 130.4 130.7 132.1 133.0 72.8 4.3 3.0 3.0 1504.2 Nov 3.3 3.3 3.4 12.0 110.7 140.7 137.9 137.7 137.5 137.6 138.2 138.1 138.4 104.1 8.4 3.6 3.5 3.4 1361.9 Dec 3.3 3.4 3.4 3.6 50.4 135.6 141.5 140.8 140.4 140.1 140.5 140.5 138.8 89.2 4.6 3.8 3.7 3.5 1286.9 Values in Total Volts Salem, OR. Daily Average DC Voltage of PV Array on a 45³ Tilt Facing South For 2004 to 2013 Latitude: 44.94 degrees Longitude: 123.03 degrees Altitude: 60 meters Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly 2004 2493.1 2090.8 1710.9 1777.5 1990.0 2031.1 1962.2 1810.2 1674.3 1502.6 1387.4 1315.2 1811.2 2005 1421.1 1614.1 1744.3 1946.8 1948.2 2080.0 1964.2 1817.3 1671.9 1561.8 1450.2 1360.6 1715.3 2006 1342.8 1250.2 1756.6 1938.4 2017.8 2046.4 1965.7 1830.1 1668.8 1535.9 1366.5 1318.2 1672.0 2007 1381.3 1502.4 1677.4 1866.2 2154.1 2133.4 2073.6 1847.6 1672.5 1579.5 1445.4 1369.9 1726.1 2008 1446.3 1661.9 1838.3 2047.3 1318.8 1095.4 1127.4 1852.9 1675.1 1505.3 1358.5 1247.7 1512.5 2009 1344.4 1488.1 1691.9 1869.6 2006.0 2077.3 1995.4 1851.6 1669.7 1503.1 1357.1 1290.2 1679.3 2010 1316.0 1476.2 1670.4 1869.8 2031.5 2094.3 2012.6 1855.7 1674.1 1493.0 1355.7 1264.0 1676.8 2011 1323.1 1509.3 1696.9 1895.7 2033.9 2106.6 2022.9 1850.3 1660.6 1511.9 1375.8 1306.7 1691.7 2012 1336.8 1497.0 1686.7 1874.2 2027.8 2094.6 2007.5 1842.4 1667.3 1502.2 1353.1 1290.5 1681.8 2013 1361.9 1507.6 1676.4 1874.1 2014.4 2086.6 2008.7 1848.4 1680.8 1514.8 1366.7 1312.6 1688.4 Average 1476.7 1559.8 1715.0 1896.0 1954.3 1984.6 1914.0 1840.7 1671.5 1521.0 1381.6 1307.5 1685.5 % SD 24 14 3 4 12 16 15 1 0 2 3 3 4 Values in average daily Total Volts * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.