"City: ","ELKINS " "State: ","WV" "WBAN No: ", 13729 "Lat(N): ", 38.88 "Long(W): ", 79.85 "Elev(m): ", 594 "Pres(mb):", 947 "Stn Type:","Secondary" "SOLAR RADIATION FOR FLAT-PLATE COLLECTORS FACING SOUTH AT A FIXED-TILT (kWh/m2/day), Percentage Uncertainty = 9" "Tilt(deg)"," ","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec","Year" "0 ","Average", 1.9, 2.6, 3.6, 4.5, 5.3, 5.7, 5.5, 5.0, 4.1, 3.1, 2.0, 1.6, 3.8 " ","Minimum", 1.7, 2.1, 3.0, 3.8, 4.4, 5.2, 4.9, 4.5, 3.6, 2.7, 1.6, 1.4, 3.6 " ","Maximum", 2.2, 3.1, 4.1, 5.7, 6.0, 6.6, 6.0, 5.6, 4.8, 3.8, 2.6, 1.9, 4.0 "Lat - 15 ","Average", 2.6, 3.3, 4.1, 4.8, 5.3, 5.6, 5.5, 5.2, 4.6, 3.9, 2.7, 2.2, 4.2 " ","Minimum", 2.0, 2.4, 3.2, 3.8, 4.4, 5.0, 4.8, 4.7, 4.0, 3.2, 2.0, 1.8, 3.9 " ","Maximum", 3.3, 4.2, 4.8, 6.2, 6.1, 6.5, 6.0, 5.9, 5.5, 5.0, 3.8, 2.8, 4.4 "Lat ","Average", 2.9, 3.5, 4.2, 4.7, 5.0, 5.2, 5.1, 5.1, 4.7, 4.1, 2.9, 2.4, 4.2 " ","Minimum", 2.1, 2.5, 3.2, 3.7, 4.1, 4.7, 4.5, 4.5, 3.9, 3.4, 2.1, 1.9, 3.9 " ","Maximum", 3.8, 4.6, 5.0, 6.1, 5.7, 5.9, 5.6, 5.7, 5.6, 5.4, 4.3, 3.3, 4.4 "Lat + 15 ","Average", 3.0, 3.6, 4.1, 4.4, 4.4, 4.5, 4.5, 4.6, 4.5, 4.1, 3.0, 2.6, 3.9 " ","Minimum", 2.2, 2.5, 3.1, 3.4, 3.7, 4.1, 4.0, 4.1, 3.7, 3.4, 2.1, 1.9, 3.7 " ","Maximum", 4.1, 4.8, 4.9, 5.6, 5.1, 5.1, 4.9, 5.2, 5.4, 5.5, 4.5, 3.5, 4.2 "90 ","Average", 2.7, 3.1, 3.1, 2.8, 2.4, 2.3, 2.4, 2.7, 3.1, 3.2, 2.6, 2.4, 2.7 " ","Minimum", 2.0, 2.1, 2.3, 2.2, 2.0, 2.2, 2.2, 2.4, 2.5, 2.7, 1.8, 1.6, 2.5 " ","Maximum", 3.8, 4.3, 3.6, 3.5, 2.8, 2.5, 2.5, 3.0, 3.7, 4.4, 4.0, 3.3, 3.0 "SOLAR RADIATION FOR 1-AXIS TRACKING FLAT-PLATE COLLECTORS WITH A NORTH-SOUTH AXIS (kWh/m2/day), Percentage Uncertainty = 9" "Axis Tilt"," ","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec","Year" "0 ","Average", 2.5, 3.4, 4.5, 5.7, 6.6, 6.9, 6.6, 6.1, 5.1, 4.0, 2.6, 2.1, 4.7 " ","Minimum", 1.9, 2.4, 3.3, 4.2, 5.2, 6.0, 5.7, 5.4, 4.2, 3.3, 1.9, 1.6, 4.3 " ","Maximum", 3.3, 4.4, 5.6, 7.7, 7.7, 8.6, 7.5, 7.2, 6.3, 5.4, 3.7, 2.7, 5.1 "Lat - 15 ","Average", 3.0, 3.9, 5.0, 6.0, 6.6, 6.9, 6.7, 6.4, 5.6, 4.6, 3.1, 2.5, 5.0 " ","Minimum", 2.2, 2.7, 3.5, 4.3, 5.2, 5.9, 5.7, 5.5, 4.5, 3.8, 2.2, 1.9, 4.7 " ","Maximum", 4.1, 5.2, 6.2, 8.2, 7.8, 8.5, 7.5, 7.5, 6.9, 6.3, 4.6, 3.4, 5.4 "Lat ","Average", 3.2, 4.0, 5.0, 5.9, 6.4, 6.6, 6.4, 6.2, 5.6, 4.8, 3.3, 2.7, 5.0 " ","Minimum", 2.3, 2.7, 3.5, 4.2, 5.0, 5.7, 5.4, 5.3, 4.4, 3.9, 2.3, 2.0, 4.7 " ","Maximum", 4.5, 5.5, 6.3, 8.1, 7.6, 8.2, 7.3, 7.3, 7.0, 6.6, 5.0, 3.8, 5.5 "Lat + 15 ","Average", 3.3, 4.1, 5.0, 5.6, 6.0, 6.1, 6.0, 5.9, 5.4, 4.8, 3.4, 2.8, 4.9 " ","Minimum", 2.3, 2.7, 3.4, 4.0, 4.6, 5.3, 5.1, 5.0, 4.3, 3.9, 2.3, 2.0, 4.5 " ","Maximum", 4.7, 5.7, 6.2, 7.8, 7.1, 7.6, 6.8, 7.0, 6.8, 6.7, 5.2, 4.0, 5.3 "SOLAR RADIATION FOR 2-AXIS TRACKING FLAT-PLATE COLLECTORS (kWh/m2/day), Percentage Uncertainty = 9" "Tracker "," ","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec","Year" "2-Axis ","Average", 3.4, 4.1, 5.1, 6.0, 6.7, 7.1, 6.8, 6.4, 5.6, 4.9, 3.4, 2.9, 5.2 " ","Minimum", 2.4, 2.7, 3.5, 4.3, 5.2, 6.1, 5.8, 5.5, 4.5, 4.0, 2.3, 2.0, 4.8 " ","Maximum", 4.8, 5.7, 6.3, 8.2, 7.9, 8.7, 7.7, 7.5, 7.0, 6.7, 5.2, 4.0, 5.6 "DIRECT BEAM SOLAR RADIATION FOR CONCENTRATING COLLECTORS (kWh/m2/day), Percentage Uncertainty = 8" "Tracker "," ","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec","Year" "1-X, E-W ","Average", 1.6, 1.7, 2.1, 2.4, 2.7, 2.9, 2.8, 2.7, 2.5, 2.4, 1.7, 1.4, 2.3 "Hor Axis ","Minimum", 0.7, 0.7, 0.9, 1.1, 1.5, 2.0, 2.1, 1.9, 1.6, 1.7, 0.8, 0.6, 1.9 " ","Maximum", 2.8, 2.8, 3.2, 4.1, 3.6, 4.2, 3.4, 3.5, 3.6, 3.9, 3.2, 2.4, 2.7 "1-X, N-S ","Average", 1.2, 1.6, 2.4, 3.1, 3.6, 3.8, 3.5, 3.3, 2.9, 2.4, 1.3, 0.9, 2.5 "Hor Axis ","Minimum", 0.5, 0.7, 1.0, 1.4, 2.0, 2.6, 2.6, 2.5, 1.9, 1.7, 0.6, 0.4, 2.1 " ","Maximum", 2.1, 2.6, 3.5, 5.3, 4.7, 5.5, 4.4, 4.4, 4.2, 3.8, 2.5, 1.7, 3.0 "1-X, N-S ","Average", 1.7, 2.1, 2.8, 3.3, 3.5, 3.5, 3.3, 3.4, 3.3, 3.0, 1.9, 1.4, 2.8 "Tilt=Lat ","Minimum", 0.7, 0.9, 1.2, 1.5, 2.0, 2.5, 2.5, 2.5, 2.1, 2.1, 0.9, 0.6, 2.4 " ","Maximum", 3.1, 3.4, 4.2, 5.6, 4.6, 5.2, 4.2, 4.5, 4.7, 4.8, 3.6, 2.5, 3.3 "2-X ","Average", 1.8, 2.2, 2.8, 3.3, 3.7, 3.8, 3.6, 3.5, 3.3, 3.1, 2.0, 1.6, 2.9 " ","Minimum", 0.8, 0.9, 1.2, 1.5, 2.1, 2.7, 2.7, 2.6, 2.1, 2.2, 0.9, 0.6, 2.4 " ","Maximum", 3.3, 3.5, 4.2, 5.7, 4.9, 5.6, 4.6, 4.7, 4.7, 4.9, 3.8, 2.8, 3.4 "AVERAGE CLIMATIC CONDITIONS" "Element "," ","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec","Year" "Temp. ","(deg C)", -2.7, -1.2, 4.2, 9.0, 14.1, 18.2, 20.4, 19.9, 16.6, 10.2, 5.2, 0.0, 9.5 "Daily Min","(deg C)", -8.8, -7.6, -2.7, 1.6, 6.7, 11.1, 13.8, 13.4, 9.9, 2.9, -1.3, -5.9, 2.8 "Daily Max","(deg C)", 3.3, 5.2, 11.2, 16.4, 21.6, 25.3, 26.9, 26.3, 23.1, 17.6, 11.6, 5.9, 16.2 "Record Lo","(deg C)",-31.1,-30.0,-26.1,-16.1, -6.7, -3.9, 0.0, 1.1, -2.8,-11.7,-17.8,-31.1,-31.1 "Record Hi","(deg C)", 24.4, 22.2, 28.9, 31.7, 32.2, 33.9, 37.2, 35.0, 36.1, 30.0, 26.7, 24.4, 37.2 "HDD,Base="," 18.3C ", 653, 548, 437, 280, 138, 34, 6, 13, 73, 254, 395, 568, 3400 "CDD,Base="," 18.3C ", 0, 0, 0, 0, 7, 31, 70, 61, 19, 3, 0, 0, 192 "Rel Hum ","percent", 74, 73, 70, 68, 72, 78, 81, 83, 83, 77, 75, 77, 76 "Wind Spd."," (m/s) ", 3.3, 3.2, 3.5, 3.5, 2.8, 2.2, 2.0, 1.8, 1.9, 2.3, 3.0, 3.2, 2.7