Figure 3.

Raw counts of the thermal infrared data of LandSat L8 images acquired over path 194 row 29 orbit on the 4 seasons in the 2009-2014 interval as a function of the black particulate PM10 concentration as recorded by the Pavia second order administrative area ground stations (located in Pavia, Voghera, Vigevano, Parona, and Sannazzaro de’ B.). Polynomial fitting between black particulate concentration and raw counts of the thermal infrared imagery is also reported: its confidence coefficient R² reached the value of .9.