[morzh]

YOu could do rough assessment.

You need to know the current. The assumption is that the current through the choke is the same that goes from the Ground back to the centertap of the rectifier.

The dropout across the choke is 85V at 1100 Ohm, making it 77mA. Let's make it 80 mA.
The total resistance of the "Candohm" is 192 Ohms. This makes it 1.14W total.
The dissipation on the sections is proportional to their resistances, so it will be 0.87W, 0.18W and 0.09W respectively.

Now triple the ratings: 3W, 0.5W and 0.25W for 146, 31 and 15 Ohms respectively. These are the ratings for the sections. Of course you could use large ratings. I usually go for triple where the circulation is good and no combustible material is nearby.