"City: ","HUNTSVILLE " "State: ","AL" "WBAN No: ", 03856 "Lat(N): ", 34.65 "Long(W): ", 86.77 "Elev(m): ", 190 "Pres(mb):", 995 "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", 2.4, 3.1, 4.1, 5.3, 5.9, 6.3, 6.1, 5.7, 4.7, 3.9, 2.7, 2.1, 4.4 " ","Minimum", 1.9, 2.7, 3.5, 4.5, 5.3, 5.2, 5.2, 4.7, 4.2, 3.2, 2.2, 1.9, 4.2 " ","Maximum", 2.8, 3.9, 5.1, 6.0, 6.9, 7.2, 6.9, 6.3, 5.3, 4.6, 3.0, 2.5, 4.6 "Lat - 15 ","Average", 3.1, 3.8, 4.7, 5.6, 5.9, 6.2, 6.0, 5.9, 5.2, 4.7, 3.5, 2.9, 4.8 " ","Minimum", 2.3, 3.2, 3.9, 4.8, 5.2, 5.1, 5.1, 4.7, 4.5, 3.7, 2.7, 2.3, 4.6 " ","Maximum", 3.9, 5.1, 5.9, 6.4, 6.9, 7.1, 6.8, 6.6, 5.9, 5.8, 4.1, 3.5, 5.1 "Lat ","Average", 3.5, 4.2, 4.8, 5.5, 5.6, 5.7, 5.6, 5.7, 5.3, 5.0, 3.9, 3.3, 4.8 " ","Minimum", 2.5, 3.4, 4.0, 4.7, 4.9, 4.7, 4.8, 4.5, 4.5, 3.9, 2.9, 2.5, 4.6 " ","Maximum", 4.5, 5.6, 6.2, 6.3, 6.5, 6.5, 6.3, 6.3, 6.0, 6.3, 4.7, 4.1, 5.2 "Lat + 15 ","Average", 3.7, 4.3, 4.7, 5.1, 5.0, 4.9, 4.9, 5.2, 5.0, 5.1, 4.1, 3.5, 4.6 " ","Minimum", 2.5, 3.5, 3.9, 4.3, 4.4, 4.1, 4.2, 4.1, 4.3, 3.8, 2.9, 2.6, 4.4 " ","Maximum", 4.8, 5.9, 6.1, 5.9, 5.7, 5.6, 5.5, 5.8, 5.8, 6.5, 4.9, 4.4, 5.0 "90 ","Average", 3.2, 3.4, 3.3, 2.9, 2.4, 2.1, 2.2, 2.7, 3.2, 3.9, 3.4, 3.1, 3.0 " ","Minimum", 2.1, 2.8, 2.7, 2.5, 2.2, 1.9, 2.1, 2.3, 2.8, 2.8, 2.4, 2.2, 2.8 " ","Maximum", 4.3, 4.8, 4.2, 3.3, 2.6, 2.3, 2.4, 3.0, 3.7, 5.0, 4.3, 4.0, 3.2 "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", 3.2, 4.2, 5.5, 7.0, 7.6, 8.0, 7.6, 7.3, 6.1, 5.3, 3.6, 2.9, 5.7 " ","Minimum", 2.3, 3.4, 4.5, 5.6, 6.5, 6.3, 6.2, 5.5, 5.0, 4.0, 2.7, 2.2, 5.3 " ","Maximum", 4.1, 5.7, 7.3, 8.2, 9.4, 9.3, 9.1, 8.3, 7.1, 6.7, 4.4, 3.6, 6.2 "Lat - 15 ","Average", 3.8, 4.7, 5.9, 7.3, 7.6, 7.9, 7.6, 7.5, 6.5, 5.9, 4.2, 3.4, 6.0 " ","Minimum", 2.6, 3.8, 4.8, 5.8, 6.5, 6.2, 6.2, 5.6, 5.3, 4.4, 3.0, 2.6, 5.6 " ","Maximum", 4.9, 6.6, 7.9, 8.6, 9.4, 9.3, 9.0, 8.5, 7.6, 7.6, 5.2, 4.4, 6.6 "Lat ","Average", 4.1, 5.0, 6.0, 7.2, 7.4, 7.6, 7.3, 7.3, 6.6, 6.2, 4.5, 3.8, 6.1 " ","Minimum", 2.7, 4.0, 4.9, 5.7, 6.3, 5.9, 5.9, 5.4, 5.3, 4.5, 3.2, 2.8, 5.7 " ","Maximum", 5.4, 7.1, 8.1, 8.5, 9.1, 8.9, 8.7, 8.4, 7.7, 8.0, 5.7, 4.8, 6.7 "Lat + 15 ","Average", 4.3, 5.1, 5.9, 6.9, 6.9, 7.1, 6.8, 7.0, 6.4, 6.2, 4.7, 3.9, 5.9 " ","Minimum", 2.8, 4.0, 4.8, 5.5, 5.9, 5.5, 5.5, 5.1, 5.2, 4.5, 3.3, 2.9, 5.5 " ","Maximum", 5.7, 7.2, 8.0, 8.2, 8.6, 8.3, 8.1, 8.0, 7.6, 8.1, 5.9, 5.1, 6.5 "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", 4.3, 5.1, 6.0, 7.3, 7.7, 8.1, 7.7, 7.5, 6.6, 6.3, 4.7, 4.0, 6.3 " ","Minimum", 2.8, 4.1, 4.9, 5.8, 6.6, 6.3, 6.3, 5.6, 5.3, 4.6, 3.3, 2.9, 5.8 " ","Maximum", 5.8, 7.3, 8.1, 8.6, 9.5, 9.4, 9.2, 8.6, 7.7, 8.1, 5.9, 5.2, 6.9 "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", 2.4, 2.7, 2.9, 3.4, 3.5, 3.7, 3.5, 3.4, 3.1, 3.4, 2.7, 2.3, 3.1 "Hor Axis ","Minimum", 1.2, 1.7, 2.0, 2.4, 2.6, 2.4, 2.4, 1.9, 2.1, 2.1, 1.4, 1.3, 2.7 " ","Maximum", 3.6, 4.6, 4.5, 4.4, 5.0, 5.0, 4.7, 4.2, 4.0, 4.8, 3.6, 3.3, 3.6 "1-X, N-S ","Average", 1.9, 2.6, 3.4, 4.5, 4.7, 4.9, 4.5, 4.4, 3.7, 3.5, 2.3, 1.7, 3.5 "Hor Axis ","Minimum", 1.0, 1.7, 2.4, 3.0, 3.5, 3.1, 3.1, 2.5, 2.5, 2.2, 1.2, 1.0, 3.1 " ","Maximum", 2.9, 4.4, 5.4, 5.8, 6.7, 6.4, 6.1, 5.5, 4.9, 5.1, 3.1, 2.5, 4.1 "1-X, N-S ","Average", 2.7, 3.3, 3.8, 4.7, 4.5, 4.5, 4.2, 4.5, 4.1, 4.2, 3.0, 2.5, 3.8 "Tilt=Lat ","Minimum", 1.4, 2.2, 2.7, 3.1, 3.4, 2.9, 2.9, 2.5, 2.7, 2.6, 1.6, 1.4, 3.4 " ","Maximum", 4.0, 5.6, 6.1, 6.0, 6.4, 6.0, 5.8, 5.5, 5.3, 6.1, 4.2, 3.5, 4.5 "2-X ","Average", 2.9, 3.4, 3.8, 4.7, 4.7, 4.9, 4.5, 4.6, 4.1, 4.3, 3.2, 2.7, 4.0 " ","Minimum", 1.4, 2.2, 2.7, 3.2, 3.6, 3.2, 3.1, 2.5, 2.7, 2.6, 1.7, 1.5, 3.5 " ","Maximum", 4.3, 5.7, 6.1, 6.1, 6.8, 6.5, 6.2, 5.7, 5.3, 6.2, 4.4, 3.8, 4.7 "AVERAGE CLIMATIC CONDITIONS" "Element "," ","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec","Year" "Temp. ","(deg C)", 3.8, 6.2, 11.1, 16.0, 20.2, 24.3, 26.1, 25.7, 22.3, 16.2, 10.8, 6.1, 15.7 "Daily Min","(deg C)", -1.6, 0.3, 4.9, 9.4, 14.1, 18.3, 20.5, 19.9, 16.4, 9.6, 4.7, 0.6, 9.8 "Daily Max","(deg C)", 9.0, 11.9, 17.1, 22.5, 26.3, 30.3, 31.7, 31.6, 28.2, 22.8, 16.9, 11.4, 21.7 "Record Lo","(deg C)",-23.9,-14.4,-14.4, -3.3, 2.2, 7.2, 12.2, 12.2, 4.4, -1.7, -9.4,-19.4,-23.9 "Record Hi","(deg C)", 24.4, 26.1, 28.9, 32.2, 33.9, 38.3, 38.9, 39.4, 38.3, 32.2, 28.3, 25.0, 39.4 "HDD,Base="," 18.3C ", 451, 341, 232, 88, 23, 0, 0, 0, 7, 96, 228, 381, 1846 "CDD,Base="," 18.3C ", 0, 0, 6, 18, 82, 180, 241, 229, 127, 31, 3, 0, 917 "Rel Hum ","percent", 72, 68, 66, 63, 69, 71, 74, 74, 74, 70, 71, 72, 70 "Wind Spd."," (m/s) ", 4.1, 4.4, 4.5, 4.2, 3.5, 3.0, 2.8, 2.7, 3.1, 3.3, 3.8, 4.2, 3.6