Underlying data: Wintertime aerosol refractive index at a highly polluted north-Indian site

Data from aerosol optical and micro-physical measurements at Rohtak during winter 2020. Scattering coefficients (unit: Mm-1) were measured using Integrating Nephelomter, AirPhoton IN 102. Absorption coefficients (unit: Mm-1) were measured using Aethalometer AE33 and interpolated to the wavelengths measured by Nephelometer using Angstrom exponents. Particle number size distributions (reported as dN/dlog(Dp), unit: #/cm3) were measured using GRIMM Model 5416 SMPS. Hourly averages for all these properties have been reported.