*3.2.2.1 Weather data*

Throughout the study, there was an average insolation of 8.4 h.d-1, an average relative humidity of 72.4%, an average daily compensated air temperature of 27.4°C and 1218.9 mm of rainfall. When these values are compared to the climatological normal from 1980 to 2009 calculated by Bastos and Andrade Júnior – who it had an average insolation of 7.8 h.d-1, relative humidity of 69.8%, average air temperature of 28.2°C and 1351.9 mm annual rainfall–, it was verified that the insolation and humidity were higher while precipitation and temperature were below [27]. The record of monthly meteorological data for the period is shown in **Table 3**.


#### **Table 3.**

*Meteorological data (insolation, compensated average relative humidity, precipitation and average compensated air temperature) from August 1, 2011 to July 31, 2012 in Teresina.*
