Dataset for "Low blank sampling method for measurement of the nitrogen isotopic composition of atmospheric nitrogen oxide "

The final dataset used in the manuscript "Low blank sampling method for measurement of the nitrogen isotopic composition of atmospheric nitrogen oxide " by Kamezaki et al. The dataset contains NOx concentration and nitrogen isotopic composition observed at Yoyogi and Tsukuba sites in Japan. Additionally, the data used in the paper are also included. Raw data are available upon request from the author.