Figure 4: Data quality check for polydisperse measurements at 1% supersaturation.

Each panel (a–g) shows for each station, in alphabetical order, the ratio of the total particle number to CCN1.0 when the number of particles <30 nm (N30) makes up between 10 and 20 % (right) and <10% (middle) of the total particle number. Results are presented in logarithmic bins where the color code shows the number of points per bin. The slopes and correlation coefficients of the curves are provided. The black line denotes the 1:1 line and the dashed black lines indicate the range of expected uncertainty from particle counting. The left panels show box and whiskers plots of the ratio N30<10%/CCN1.0 with the median, interquartile range, 10th and 90th percentiles, and points beyond the 2.5th and 97.5th percentile. The grey solid lines and dashed lines indicate the same as black lines in the right hand side plots. The number of total points is provided (pnts) as well as the geometric mean (GeoMean) and geometric standard deviation (GSD).