Table 3.Enumeration of roof tiles during the three periods of study (2011- 2012 – 2013), with their respective assigned codes; description and image; albedo (â), surface temperature (Ts1–Ts2–Ts3) and Celsius degrees; Solar Reflectance Index (SRI1, SRI2, SRI3) in percentages; and total SRI difference. (SRI 1 – SRI 3= ' SRI Total).