What should ammonia, nitrate and nitrite levels be for African Cichlids?

We just tested these 3 things for the first time. Our nitrate level was 40, our nitrite level was 0, and ammonia was about .10 if that. What level should these three be at? Our tank is 70-80 gallons. The fish we have are: blue zebra, yellow lab, Mel. Auratus, jewel, hap 44, hap comprisceps (if that even matters).