This study presents a comprehensive analysis of the 1.5 years’ worth of OGO 6 BIMS data, focusing on the density profiles of ionospheric oxygen and nitrogen ions across various environmental parameters, including solar activity, geomagnetic activity, seasons, latitude, altitude, and magnetic local time. While the abundances of both O+ and N+ decrease monotonically with increasing altitude, the two species follow significantly different power laws, such that nN+ decreases at a slower rate (1/x) than nO+ (1/x2). This leads to a linear increase in the nN+/nO+ ratio with altitude. The average nN+/nO+ ratio reaches its maximum in the midnight sector, whereas the average densities of both oxygen and nitrogen ions peak on the day side. The peak in oxygen ion density leads that of nitrogen ion by 30º in longitude. These differences are most likely due to the different spatio-temporal scales for production and loss for those two ion species. The nN+/nO+ ratio displays a strong seasonal dependence, reaching its highest values during the summer season.