Being a high-school student, I only have a qualitative understanding of the wave mechanical model of atom.
Below are my inferences regarding the plot shown in the above picture:
The concerned orbital has $3$ radial nodes (I'm counting the places where the value of the y-coordinate is zero excluding the ones at the extreme left and right).
Hence, the orbital should satisfy $n-l-1=3$. The orbitals satisfying the condition are $4s, 5p, 6d, 7f,\ldots$.
Are my inferences correct?