SOE
That's not good utilisation. You can do a daily round trip to Nigeria with one aircraft (out day back night) as is done to Lagos. This one did three round trips a week, plus the positioning costs.
If the Nigerian routes make as much as sometimes claimed, wonder why this route has gone, why Nigeria Airways staggered into bankruptcy, why Kano disappeared from all international routings, etc. And that's before all the tickets sold on credit cards which subsequently get dishonoured, and the costs for all the aircraft damage regularly done on the potholed runway surface at Lagos.