If you live in Lagos, Nigeria, for example, the RON of the fuel you will get from the filling stations is between a minimum of 90 and a maximum of 93, according to a research conducted by Ikeora et al 2015. However, some vehicles require Octane rating of up to 95, so in that case you may want to employ Octane boosters.
This is the range of fuel you will get in Nigeria, even though there are some vehicles with higher octane requirements, that is why good Octane boosters are suggested. Thank you for taking your time to read through and dropping this interesting and encouraging comment.