Figure 5.

Histogram of calibration error magnitude versus frequency for a Pt500 PRT temperature sensor within a naturally ventilated: (a) wooden Stevenson screen (N = 101,529; RMS = ±0.20 °C)); or (b) a PVC Stevenson screen (N = 99,973; RMS = ±0.19 °C), each relative to the naturally ventilated KNMI reference screen [169]. Each fit (r² = 0.999; 0.943, respectively) included a Lorentzian and two Gaussians: (red line), the fit; (blue line), the Lorentzian; (orange line), Gaussian one; and (green line), Gaussian two.