Salem, OR. Global Data on a 45³ Tilt Facing South Salem, OR. Hourly Average Global Data 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 0 0 0 0 1 23 122 219 288 326 320 273 188 45 1 0 0 0 1807 Feb 0 0 0 0 14 69 197 336 431 487 498 435 340 186 21 0 0 0 3013 Mar 0 0 0 8 53 156 246 416 522 552 559 493 382 247 82 4 0 0 3720 Apr 0 0 6 37 97 245 349 511 606 668 634 581 470 342 165 35 1 0 4746 May 0 2 23 61 110 285 414 535 634 686 697 638 528 377 225 78 7 0 5300 Jun 0 4 29 65 108 269 400 533 630 682 685 630 530 414 264 111 16 0 5372 Jul 0 2 21 49 81 273 465 630 763 841 867 820 703 532 340 145 17 0 6551 Aug 0 0 9 39 84 281 436 619 773 856 864 809 679 510 269 82 4 0 6314 Sep 0 0 1 22 92 259 372 609 734 810 787 706 571 371 71 7 0 0 5413 Oct 0 0 0 5 57 144 317 455 548 595 573 510 361 138 9 0 0 0 3713 Nov 0 0 0 0 11 69 184 284 361 383 356 290 166 19 0 0 0 0 2123 Dec 0 0 0 0 2 24 129 213 264 297 288 237 115 7 0 0 0 0 1575 Values in Watt hours/meter^2 per hour Salem, OR. Daily Average Global Data 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 1.43 2.86 4.61 5.35 4.77 5.47 6.46 5.97 4.47 3.48 1.96 1.10 3.99 2005 1.86 3.81 4.02 4.31 4.26 5.09 6.44 6.85 6.04 2.81 2.71 1.77 4.16 2006 1.04 3.50 3.43 5.30 5.62 5.56 6.48 6.80 6.19 4.71 1.49 1.83 4.33 2007 2.76 2.58 3.81 4.71 5.90 5.54 6.03 6.13 5.35 3.22 2.68 1.24 4.17 2008 1.97 3.29 3.66 4.63 4.88 5.51 6.75 5.80 5.82 4.09 1.86 1.59 4.15 2009 2.41 3.00 3.63 4.95 6.43 5.46 6.75 5.96 5.65 3.66 2.60 2.49 4.42 2010 1.32 2.96 3.93 4.57 5.10 5.13 6.82 6.37 4.72 3.98 1.93 1.41 4.02 2011 1.95 2.95 2.79 4.50 4.78 4.87 6.01 6.59 5.47 2.77 1.83 1.83 3.86 2012 1.85 2.74 3.23 4.36 5.63 5.17 6.44 6.96 6.27 3.83 1.61 1.14 4.10 2013 1.37 2.44 4.10 4.78 5.70 5.92 7.35 5.71 4.14 4.53 2.60 1.34 4.17 Average 1.79 3.01 3.72 4.75 5.31 5.37 6.55 6.31 5.41 3.71 2.13 1.58 4.14 % SD 29 14 14 8 12 6 6 7 14 18 22 27 4 Values in average daily KWhr/meter^2 per Day * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.