This dataset contains data used to generate the results figures in the journal article "The SPectrometer for Ice Nuclei (SPIN): an instrument to investigate ice nucleation" published in Atmospheric Measurement Techniques. Data are provided in csv format with column headers as variable names for 1D data and 2D data arranged as matrices with x and y axis values on the margins. For data with symmetric error bars "_std" is appended to the variable name and for those with asymmetric error bars, "_low" and "_high" are appended, respectively.