Table 2. Confusion matrix for the pine processionnary moth field data (true class) and Google-derived data (hypothetized class) in the small-scale study grid (SG).

		field data
		presence	absence
Google	presence	TP = 3	FP = 0
	absence	FN = 63	TN = 49

Of the 121 sampled cells, 6 were removed from the analysis because no GSV data were available for comparison with field data.