Describir: Effects of nearby walks and concrete areas on indoor natural lighting..

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|  __ \\    / _ \\  | || | ||  |  ___|| |      \\  \ \\/ //  | \| ||  /_   _// 
| |  \ ||  / //\ \\ | '--' ||  | ||__   |  --  //   \ ` //   |  ' ||   -| ||-  
| |__/ || |  ___  ||| .--. ||  | ||__   |  --  \\    | ||    | .  ||   _| ||_  
|_____//  |_||  |_|||_|| |_||  |_____|| |______//    |_||    |_|\_||  /_____// 
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