"City: ","NORFOLK " "State: ","VA" "WBAN No: ", 13737 "Lat(N): ", 36.90 "Long(W): ", 76.20 "Elev(m): ", 9 "Pres(mb):", 1017 "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", 2.3, 3.0, 4.1, 5.1, 5.8, 6.2, 5.9, 5.4, 4.5, 3.5, 2.5, 2.0, 4.2 " ","Minimum", 1.9, 2.4, 3.4, 4.3, 5.0, 5.6, 5.2, 4.6, 3.9, 2.6, 1.9, 1.7, 4.0 " ","Maximum", 2.6, 3.6, 4.6, 6.1, 6.4, 6.7, 6.7, 6.1, 5.1, 4.0, 2.9, 2.3, 4.4 "Lat - 15 ","Average", 3.2, 3.9, 4.8, 5.5, 5.8, 6.0, 5.8, 5.6, 5.0, 4.3, 3.5, 2.9, 4.7 " ","Minimum", 2.4, 2.9, 3.8, 4.5, 5.0, 5.5, 5.1, 4.8, 4.3, 3.0, 2.4, 2.3, 4.4 " ","Maximum", 3.9, 4.9, 5.5, 6.6, 6.5, 6.6, 6.7, 6.4, 5.8, 5.1, 4.3, 3.4, 5.0 "Lat ","Average", 3.6, 4.3, 4.9, 5.4, 5.5, 5.6, 5.4, 5.4, 5.1, 4.6, 3.9, 3.4, 4.8 " ","Minimum", 2.6, 3.0, 3.9, 4.4, 4.7, 5.1, 4.8, 4.6, 4.3, 3.1, 2.6, 2.6, 4.4 " ","Maximum", 4.5, 5.4, 5.7, 6.5, 6.1, 6.1, 6.2, 6.2, 5.9, 5.5, 4.9, 4.0, 5.0 "Lat + 15 ","Average", 3.8, 4.4, 4.8, 5.0, 4.8, 4.8, 4.8, 4.9, 4.9, 4.7, 4.1, 3.6, 4.6 " ","Minimum", 2.7, 3.0, 3.8, 4.1, 4.2, 4.4, 4.2, 4.2, 4.1, 3.0, 2.6, 2.8, 4.2 " ","Maximum", 4.9, 5.7, 5.6, 6.1, 5.4, 5.2, 5.4, 5.7, 5.7, 5.6, 5.2, 4.3, 4.8 "90 ","Average", 3.4, 3.6, 3.4, 3.0, 2.5, 2.3, 2.3, 2.8, 3.3, 3.6, 3.6, 3.3, 3.1 " ","Minimum", 2.3, 2.4, 2.7, 2.5, 2.2, 2.2, 2.1, 2.4, 2.7, 2.3, 2.2, 2.4, 2.8 " ","Maximum", 4.5, 4.8, 4.0, 3.5, 2.7, 2.4, 2.6, 3.1, 3.8, 4.4, 4.6, 4.0, 3.3 "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, 6.7, 7.3, 7.7, 7.4, 6.9, 5.9, 4.8, 3.6, 2.9, 5.5 " ","Minimum", 2.3, 2.9, 4.2, 5.3, 6.0, 6.8, 6.1, 5.5, 4.8, 3.2, 2.3, 2.2, 5.1 " ","Maximum", 4.0, 5.4, 6.4, 8.4, 8.5, 8.7, 8.7, 8.1, 7.0, 5.8, 4.4, 3.3, 5.8 "Lat - 15 ","Average", 3.9, 4.9, 6.0, 7.1, 7.4, 7.7, 7.4, 7.1, 6.3, 5.4, 4.3, 3.5, 5.9 " ","Minimum", 2.8, 3.3, 4.6, 5.4, 6.0, 6.7, 6.1, 5.7, 5.1, 3.5, 2.7, 2.7, 5.5 " ","Maximum", 4.9, 6.3, 7.1, 8.9, 8.6, 8.6, 8.7, 8.4, 7.6, 6.6, 5.3, 4.2, 6.3 "Lat ","Average", 4.2, 5.1, 6.2, 7.0, 7.1, 7.4, 7.1, 7.0, 6.4, 5.6, 4.6, 3.9, 6.0 " ","Minimum", 3.0, 3.4, 4.6, 5.4, 5.8, 6.4, 5.8, 5.6, 5.2, 3.5, 2.9, 2.9, 5.5 " ","Maximum", 5.4, 6.8, 7.2, 8.8, 8.3, 8.3, 8.4, 8.3, 7.7, 6.9, 5.8, 4.7, 6.3 "Lat + 15 ","Average", 4.4, 5.2, 6.1, 6.7, 6.7, 6.9, 6.6, 6.6, 6.2, 5.7, 4.8, 4.1, 5.8 " ","Minimum", 3.0, 3.4, 4.5, 5.1, 5.5, 6.0, 5.4, 5.3, 5.0, 3.5, 2.9, 3.0, 5.4 " ","Maximum", 5.7, 6.9, 7.2, 8.5, 7.9, 7.7, 7.8, 7.9, 7.5, 7.0, 6.1, 4.9, 6.2 "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", 4.4, 5.3, 6.2, 7.1, 7.4, 7.9, 7.5, 7.1, 6.4, 5.7, 4.8, 4.1, 6.2 " ","Minimum", 3.0, 3.4, 4.7, 5.5, 6.1, 6.9, 6.2, 5.7, 5.2, 3.6, 2.9, 3.1, 5.7 " ","Maximum", 5.8, 6.9, 7.3, 8.9, 8.7, 8.8, 8.9, 8.4, 7.7, 7.0, 6.1, 5.0, 6.5 "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", 2.6, 2.9, 3.1, 3.3, 3.4, 3.6, 3.4, 3.2, 3.0, 3.0, 2.9, 2.5, 3.1 "Hor Axis ","Minimum", 1.5, 1.4, 2.0, 2.0, 2.4, 2.8, 2.4, 2.3, 2.2, 1.5, 1.3, 1.6, 2.7 " ","Maximum", 3.8, 4.3, 3.9, 4.9, 4.3, 4.4, 4.4, 4.2, 4.1, 4.1, 4.0, 3.3, 3.4 "1-X, N-S ","Average", 2.1, 2.7, 3.6, 4.3, 4.5, 4.7, 4.3, 4.1, 3.6, 3.1, 2.3, 1.8, 3.4 "Hor Axis ","Minimum", 1.1, 1.3, 2.3, 2.6, 3.1, 3.6, 3.0, 2.8, 2.6, 1.5, 1.0, 1.1, 3.0 " ","Maximum", 3.0, 4.1, 4.5, 6.3, 5.7, 5.8, 5.9, 5.5, 5.0, 4.2, 3.3, 2.3, 3.8 "1-X, N-S ","Average", 2.9, 3.5, 4.1, 4.5, 4.3, 4.4, 4.1, 4.2, 4.0, 3.8, 3.2, 2.7, 3.8 "Tilt=Lat ","Minimum", 1.6, 1.7, 2.6, 2.7, 3.0, 3.4, 2.9, 2.9, 2.9, 1.9, 1.5, 1.7, 3.3 " ","Maximum", 4.2, 5.3, 5.2, 6.6, 5.6, 5.4, 5.6, 5.5, 5.5, 5.1, 4.5, 3.5, 4.2 "2-X ","Average", 3.1, 3.6, 4.1, 4.6, 4.6, 4.8, 4.4, 4.3, 4.0, 3.8, 3.4, 2.9, 4.0 " ","Minimum", 1.7, 1.7, 2.6, 2.8, 3.2, 3.7, 3.1, 2.9, 2.9, 1.9, 1.5, 1.8, 3.5 " ","Maximum", 4.5, 5.4, 5.2, 6.7, 5.9, 5.9, 6.0, 5.7, 5.5, 5.2, 4.8, 3.8, 4.4 "AVERAGE CLIMATIC CONDITIONS" "Element "," ","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec","Year" "Temp. ","(deg C)", 3.9, 5.0, 9.2, 13.9, 18.9, 23.4, 25.7, 25.1, 22.2, 16.2, 11.4, 6.6, 15.1 "Daily Min","(deg C)", -0.6, 0.2, 4.1, 8.4, 13.8, 18.4, 21.1, 20.8, 17.9, 11.6, 6.6, 1.9, 10.3 "Daily Max","(deg C)", 8.5, 9.8, 14.4, 19.4, 24.1, 28.3, 30.2, 29.5, 26.4, 20.8, 16.2, 11.2, 19.9 "Record Lo","(deg C)",-19.4,-13.3, -7.8, -2.2, 2.2, 7.2, 12.2, 9.4, 7.2, -2.8, -6.7,-13.9,-19.4 "Record Hi","(deg C)", 25.6, 27.2, 31.1, 36.1, 37.8, 38.3, 39.4, 40.0, 37.2, 35.0, 30.0, 26.7, 40.0 "HDD,Base="," 18.3C ", 446, 373, 282, 138, 28, 0, 0, 0, 6, 91, 211, 365, 1942 "CDD,Base="," 18.3C ", 0, 0, 0, 5, 47, 154, 227, 210, 121, 26, 0, 0, 790 "Rel Hum ","percent", 66, 66, 65, 63, 69, 71, 73, 75, 74, 72, 69, 67, 69 "Wind Spd."," (m/s) ", 5.1, 5.4, 5.6, 5.3, 4.8, 4.5, 4.1, 4.0, 4.4, 4.6, 4.8, 5.1, 4.8