I'm assuming the A one is ammonia, and the N ones are nitrite and nitrate. If your tank was cycled, the nitrAtes should be probably around 20. If you add angels now, I'm somewhat certain they would die, because from what I've heard, angelfish are not the most hardy fish in the world.
Here's what cycling does. Fish poops>bacteria converts poop (ammonia) into nitrItes>Another bacteria converts nitrItes into nitrAtes>plants/water changes remove nitrAtes. To get your bacterial culture going, you need to add ammonia (ace hardware, true value and meijers are the confirmed places; it's called janitorial strength ammonia, clear ammonia, pure ammonia, and if you shake it, there should be little to no bubbles, kind of like water). The cycling process can take up to 6 weeks, but it will be much quicker if you find a tank that has already been cycled and borrow a decoration, some gravel, or the filter pad, and this can speed your cycle up by up to 3-4 weeks. pH is the amount of hyroxides in the water, kH is calcium carbonates, and gH are other minerals.
If you have any questions, feel free to ask.