Are these levels ok?

The power levels, SNR values, and error counts all look fine. Where you having any problems, or just asking out of curiosity? 

Note that, when asking for help with a piece of hardware, it's a good idea to include the model number of the device. And if the device is a modem or a modem+router gateway, it's best to include your Internet plan speed and the last date and time the device was reset or rebooted (often reported as "Uptime"). 

But unless you reset the stats just moments before grabbing them for your post, or you are having problems with your Internet service, these look pretty good!

Posts with images get "privatized" until the images are reviewed by the Forum Admins. The text came through in the Notification email I got, but the image(s) did not. There may be a technical problem with them. 

Note that the CAX30 is not compatible with Gigabit internet service. Comcast/Xfinity rates it for wired download speeds "Up to 949 Mbps". Follow the "See all modems" link near the bottom of https://www.xfinity.com/support/internet/customerowned, and then under the "Compatible Modems" or "All compatible modems by brand" headings click the Netgear list.

Using devices on Internet speed tiers for which they are not compatible with tends to produce unexpected results, often speeds well below the ones you are paying for. AFAIK Comcast/Xfinity has never said how they provision devices operating on speed tiers they're not compatible with. All I can tell you is that many customers who tried it have reported that they don't get full speed. There's a tendency to think the device will operate at the maximum speed it is capable of, but that doesn't seem to be the case. Instead, incompatible devices often seem to be provisioned to run at speeds well below what they should be capable of.