Nope I dont agree with that, the two positive humps is when the north pole is approaching the coil and leaving the coil, and the third hump inbetween is when the north pole is aligned with the coil, thats what I think.
Similarly for the two negative humps and the south pole.
I would politely disagree. On careful analysis you will find the double humps(+ & - ) are actually formed when the poles reverse.
Let's say the the N pole is approaching the coil = 0 to +A
Next, the N pole is perfectly aligned with the axis of the coil = 0 state.
Again N pole is leaving the coil = 0 to -A
Next, the magnet is aligned perpendicular to axis of coil = 0 state
Next, the S pole is approaching the coil = 0 to -A (this is actually the 0 state between the double humps)
And the process continues as above....