Fig. 6From: Seasonal variations of nighttime D-region ionosphere in 2013 solar maximum observed from a low-latitude stationThe electron density profile obtained using tweek method (pink line and diamonds), the IRI-2012 model (blue line and circles) and the results obtained at Allahabad, India (Maurya et al. 2012a) (green line and triangles) during winter (a), equinox (b), and summer (c) seasonsBack to article page