Determining Optimum Tilt Angle for 1 MW Photovoltaic System at Sukkur, Pakistan

Table 2

Monthly specific daily global irradiance (), year days, days of the month, tilt angle (deg), irradiance level after tilt, and declination angle of the earth.

-Wh/m^2/day	-W/m^2/day	Year day	Month day	Optimum tilt angle (deg)	Irradiance level after tilt	Declination angle of earth
7490	913	21	21 Jan	57.73	1630	-20.14
7560	921	52	21 Feb	47	1310	-11.23
8770	1069	80	21 Mar	30.95	1229	-0.403
9420	1148	111	21 Apr	10.16	1164	11.58
10610	1293	141	21 May	0	1294	20.14
11210	1367	172	21 Jun	0	1367	23.45
11420	1392	202	21 Jul	0	1392.7	20.44
10250	1250	233	21 Aug	9.834	1265.8	11.75
10390	1267	264	21 Sep	30.62	1452	-0.2
8830	1076	294	21 Oct	47.74	1549	-11.75
9000	1097	325	21 Nov	58.06	1977	-20.44
6990	852	355	21 Dec	61.19	1677.6	-23.45