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

Table 1

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	Tilt angle (deg)	Irradiance level after tilt	Declination angle of earth
7490	913	21	21 Jan	15	1222	-20.14
7560	921	52	21 Feb	15	1125	-11.23
8770	1069	80	21 Mar	15	1186	-0.403
9420	1148	111	21 Apr	15	1161	11.58
10610	1293	141	21 May	15	1227.6	20.14
11210	1367	172	21 Jun	15	1265.5	23.45
11420	1392	202	21 Jul	15	1319	20.44
10250	1250	233	21 Aug	15	1261.5	11.75
10390	1267	264	21 Sep	15	1403	-0.2
8830	1076	294	21 Oct	15	1320	-11.75
9000	1097	325	21 Nov	15	1474	-20.44
6990	852	355	21 Dec	15	1187.5	-23.45