Figure 9.
Comparison between observed and best performing maximum incident solar radiation (model 12) in W/m2 in Lagos, Nigeria when compared with models in Table 4 and Table 14; Comparison between observed and best performing maximum incident solar radiation (model 17) in W/m2 over 37 metropolitan towns in Nigeria when compared to other models in Table 6 and Table 14; Comparison between observed and best performing optimum tilt angle (model 5) in degrees in Lagos, Nigeria when compared with models in Table 3 and Table 14; Comparison between observed and best performing optimum tilt angle (model 14) in degrees in 37 metropolitan towns in Nigeria when compared with model 15 (present study), Talebizadeh et al. [67], Jamil et al. [54] as presented in Table 7 and Table 14.