Data for: Effect of sample number and location on accuracy of land use regression model in NO2 prediction

NO2 monitoring data in high spatial density with a total of 263 sites in Shijiazhuang city of China, which was the average in the non-heating period of 2019 from March 16 to November 14.本数据集为中国石家庄市的高空间密度二氧化氮（NO2）监测数据，共计263个监测站点，数据为2019年3月16日至11月14日非供暖季的平均值。