Using Machine Learning for Performance Classification and Early Fault Detection in Solar Systems

Table 3

List of the most informative attributes associated with their calculated chi-squared values.

Χ^2	Attribute
1233.848	Date
383.1912	Relative humidity (%)
352.7815	DHI (Wh/m^2)
234.4035	Barometric pressure (mB (hPa equiv))
187.6781	DNI (Wh/m^2)
131.0724	Standard deviation DHI (Wh/m^2)
122.4529	Wind direction at 3 m (°N)
102.0796	Barometric pressure uncertainty (mB (hPa equiv))
88.7592	Site
87.8772	Standard deviation GHI (Wh/m^2)
64.5802	Latitude
28.5757	Wind speed at 3 m (std dev) (m/s)
27.8873	Standard deviation DNI (Wh/m^2)
18.614	Peak wind speed at 3 m (m/s)