Xfinity Internet failures in Petaluma, CA starting noon Aug 27 2021 Pacific time.

Here is "mtr 1.1.1.1" traceroute output:
                             My traceroute  [v0.92]
                                 2021-08-27T14:51:51-0700
Keys:  Help   Display mode   Restart statistics   Order of fields   quit
                                       Packets               Pings
 Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. xx.xxx.xxx.xxx                    0.0%   121    0.5   0.4   0.2   1.2   0.2
 2. 10.100.0.1                        0.0%   121    0.5   0.8   0.4   2.0   0.2
 3. 96.120.88.37                     21.5%   121   12.5  18.0   8.0  32.5   7.7
 4. po-301-1204-rur02.petaluma.ca.sf 14.9%   121   12.7  18.6   7.7  32.7   8.0
 5. be-23-rar01.fairfield.ca.sfba.co  7.4%   121   15.5  21.8  10.0  34.4   8.0
 6. be-397-ar01.hayward.ca.sfba.comc 12.4%   121   12.4  22.3  12.3  37.2   7.4
 7. be-36331-cs03.9greatoaks.ca.ibon 12.4%   121   20.1  23.8  13.7  37.6   7.9
 8. be-2304-pe04.9greatoaks.ca.ibone 16.5%   121   14.2  23.2  13.1  37.1   7.6
 9. 66.208.228.6                      9.2%   120   58.5  40.6  14.8 106.1  19.3
10. one.one.one.one                  11.7%   120   18.8  24.9  13.6  41.2   8.2

And here is SMOKEPING output showing baseline line quality.

Below that is the cable modem 192.168.100.1 SNR table.

Power cycled modem many times.  Still a problem. 
Cant even get to Google reliably.

This happens enough times when it is hot or wet that I suspect it is a problem with your infrastructure.

Please fix this Xfinity! 

At Outside >90F 202108271400

At Outside 73F 202108272135

At Outside 84F 202108281044

At Outside 81F 202108291210

At Outside 88F 202108291320

At Outside 91F 202108291422

At Outside 95F 202108291712

At Outside 83F 202108292023

SmokePing

Sep 6 2021