Open Access
Table 1
Monthly GHI and ambient temperature values for the selected cities.
| Karachi |
Islamabad |
Peshawar |
Lahore |
Quetta |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Months | GHI |
T
|
GHI |
T
|
GHI |
T
|
GHI |
T
|
GHI |
T
|
| kWh/m2 | °C | kWh/m2 | °C | kWh/m2 | °C | kWh/m2 | °C | kWh/m2 | °C | |
| January | 124.9 | 18.61 | 83.2 | 10.29 | 84.3 | 8.63 | 84.2 | 11.71 | 108.5 | 8.76 |
| February | 134.6 | 21.54 | 83.1 | 13.22 | 84.2 | 11.03 | 102.9 | 15.89 | 121.5 | 11.23 |
| March | 178.6 | 26.29 | 140.8 | 18.93 | 131.9 | 17.13 | 142.8 | 21.77 | 158.9 | 17.05 |
| April | 190.2 | 29.18 | 165.5 | 23.92 | 166.0 | 22.43 | 161.6 | 26.79 | 186.0 | 22.75 |
| May | 201.1 | 31.31 | 203.8 | 29.7 | 196.3 | 28.4 | 184.4 | 32.64 | 220.6 | 28.26 |
| June | 180.6 | 31.57 | 195.6 | 31.31 | 197.7 | 30.89 | 179.1 | 32.53 | 231.1 | 29.62 |
| July | 145.9 | 30.7 | 183.3 | 30.44 | 193.9 | 30.79 | 163.4 | 31.08 | 216.9 | 29.35 |
| August | 139.6 | 29.4 | 168.2 | 29.08 | 170.4 | 29.33 | 157.2 | 30.35 | 203.3 | 28.45 |
| September | 158.7 | 29.14 | 163.8 | 27.06 | 162.0 | 26.92 | 149.4 | 28.69 | 193.7 | 26.24 |
| October | 154.5 | 29.33 | 140.5 | 22.94 | 139.0 | 22.28 | 129.3 | 25.58 | 164.1 | 22.37 |
| November | 130.1 | 24.69 | 108.6 | 16.15 | 104.2 | 15.04 | 99.1 | 18.72 | 126.0 | 15.43 |
| December | 116.6 | 20.1 | 79.4 | 11.59 | 87.1 | 10.4 | 83.8 | 13.69 | 109.2 | 10.64 |
| Year | 1855.4 | 26.84 | 1715.9 | 22.1 | 1717.0 | 21.16 | 1637.2 | 24.16 | 2039.8 | 20.9 |
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