The datasets consisted of hourly emission data. Any average of 24 or 48 consecutive data points of the original dataset is a possible outcome of a 24-h or 48-h continuous sampling strategy. Yet, it was assumed that such a sampling strategy is only performed on working days and that it should start (and end) between working hours (9 a.m.–5 p.m.). Considering these restrictions, the first dataset yielded 115 possible estimates for a 24-h strategy and 72 possible estimates for a 48-h strategy. For the second dataset, there were 116 possible estimates of a 24-h strategy and 85 possible estimates for a 48-h strategy. All possible estimates were collected in histograms with a bin width of 0.25 kg NH3 year−1 (animal place)−1. The dispersion of these histograms was a measure for the precision of the simulated sampling strategy, while the skewness of the histograms indicates its accuracy.