In case of selected attributes: moon month period, solar month period, temperature, PVpower (class label), and PVInputVoltage, we will get Figure 3 tree in which the PVInputVoltage is the root.
Selected attributes for this model were Moon Month Period, PVInputVoltage, PVPower, Solar Month Period, Temperature, Time Period Num, and Week day.
So association rules added that most likely high produced PVInputVoltage values can be in the time period between 12:00 and 13:00 in Gaza, despite of high PVInputVoltage the PVpower values will be low in case of temperature between 32 and 38, it's more likely to get lower PVpower values when it's a day between 11 and 20 of solar month (solar month period 2), Wednesday is strongly related to low PVpower values, and probability of low PVpower values can increase when a day fall in solar month period 2 and in moon month period 3 or a day falls in solar month period 3 and in moon month period 1.
Most important knowledge informed about that solar month periods affects PV charging current, but moon month periods affects PV input voltage.
