What is a reasonable number of uncorrected errors for a connection?

As I wrote: I have a single cable (home run) from the outside network interface (NID) box on my house to my modem.  The drop from the Xfinity pedestal is new (3 months old).  The modem tests ok.  A technician came 8 days ago, replaced the rg6 connector at the pedestal, tested the signal at the pedestal, NID, and at my modem.  He said it was good, but was concerned about the power level at the modem and added a splitter.

He rebooted the modem again before he left.  These (below) are the signal levels 1 day & 20 hrs later.  The outside daily temperatures were in the upper 80s and lower 90s F.  

After this the daily temperatures did not go into the 90s, and for the last 4 or 5 days have not gone over 80F.  Overnight temperatures were in the mid-60s.  Inside temperatures have been 65-75F.  Uncorrectables have not increased since the outside temperatures fell below 85-90+F.

Electronics and amplifiers can be temperature sensitive.  Prior to the technicians visit the outside temps were in the 90s, almost 100F on two days--and the uncorrectables increased each day.   When temperatures have been more temperate, the connection is better.  The problems seem to have started when the summer temperatures arrived.  Is this normal?  Or do I have a bad amplifier, or whatever, in the pedestal or further upline in the Xfinity network?

I am concerned because the daytime highs (Chicagoland) are forecasted to be back in the upper 80s by week end.

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Can someone answer the question: Do uncorrectables matter if the download/upload speeds are at specifcation?  The uncorrectables have jumped in the last two days, but 3rd party speed test shows my speed/jitter at acceptable levels.  The latency has jumped a little, but streaming is mostly ok.  Netflix was a little slow filling the buffer last night.

System Up Time 5 days 22h:12m:36s         Network Access Allowed

Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected    1 Locked QAM256 20 567.0 6.2 44.0 376756 571752    2 Locked QAM256 13 525.0 5.5 43.9 382701 630016    3 Locked QAM256 14 531.0 5.5 43.7 380497 624903    4 Locked QAM256 15 537.0 5.4 44.0 382955 625760    5 Locked QAM256 16 543.0 5.8 43.9 382156 617239    6 Locked QAM256 17 549.0 6.0 44.1 381356 608901    7 Locked QAM256 18 555.0 6.1 44.2 382649 600082    8 Locked QAM256 19 561.0 6.4 44.7 380641 583995    9 Locked QAM256 21 573.0 6.8 44.7 375236 555025    10 Locked QAM256 22 579.0 7.0 44.8 376103 542590    11 Locked QAM256 23 585.0 7.1 44.8 375302 530308    12 Locked QAM256 24 591.0 7.0 44.6 374696 516447    13 Locked QAM256 25 597.0 6.6 44.5 380943 520304    14 Locked QAM256 26 603.0 6.9 44.3 380098 509834    15 Locked QAM256 27 609.0 6.8 44.4 378684 501370    16 Locked QAM256 28 615.0 6.5 44.3 382177 504136    17 Locked QAM256 29 621.0 6.7 43.9 380787 494046    18 Locked QAM256 30 627.0 7.0 43.9 378704 489035    19 Locked QAM256 31 633.0 7.0 43.9 379335 481311    20 Locked QAM256 32 639.0 7.2 44.4 373927 464806    21 Locked QAM256 33 645.0 7.7 44.9 368320 460544    22 Locked QAM256 34 651.0 7.9 45.0 367276 445128    23 Locked QAM256 35 657.0 8.1 45.0 362243 431122    24 Locked QAM256 36 663.0 8.2 45.1 352002 420714    25 Locked QAM256 37 669.0 8.0 45.0 354718 415666    26 Locked QAM256 38 675.0 8.4 44.0 351953 402283    27 Locked QAM256 39 681.0 8.3 44.6 344716 388628    28 Locked QAM256 40 687.0 8.2 44.3 351000 388961    29 Locked QAM256 41 693.0 8.6 44.6 341828 369773    30 Locked QAM256 42 699.0 8.9 44.0 338039 363379    31 Locked QAM256 43 705.0 8.6 44.3 340879 366040    32 Locked QAM256 44 711.0 8.9 44.0 331532 347282    33 Locked OFDM PLC 193 762.0 10.8 45.4 69497909 64203

Upstream Bonded Channels

Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)    1 Locked SC-QAM 1 5120 35.6 49.8    2 Locked SC-QAM 2 5120 29.2 50.3    3 Locked SC-QAM 3 5120 22.8 50.3    4 Locked SC-QAM 4 5120 16.4 50.8    5 Locked SC-QAM 5 2560 10.4 51.5    6 Locked SC-QAM 6 1280 39.6 47.0

Update - the problem remains: the connection stability and uncorrectables are still varying with the outside temperature.  It's ok when the daily highs are under 80-85+ degF, and especially when the night time lows are >70F.  The weather has been much cooler, especially the overnight lows, over the last three days the uncorrectables are -0-.

My inside equipment is unchanged and working fine.  The pedestal to house drop & connectors are new last month.

The only conclusion I can make is that the connection quality varies with the outside temperature (and possibly also if it has been raining), and that the problem is upstream of my house in the xfinity network.

Update Sept 21, 2024

Update - since July 27, 2024 the trend continues: the uncorrectables start to accumulate when the outside temperature is in the mid to high 80s, and especially over 90F.  Streaming video continues to studder in the evening when it's hottest.  There has been no significant rain in about the last 30 days.

All my inside equipment checks out.  The pedestal to house drop & connectors are new as of June; in fact, they were replaced by Xfinity twice since June.

𝐓𝐡𝐞 𝐨𝐧𝐥𝐲 𝐜𝐨𝐧𝐜𝐥𝐮𝐬𝐢𝐨𝐧 𝐭𝐡𝐚𝐭 𝐜𝐚𝐧 𝐛𝐞 𝐦𝐚𝐝𝐞 𝐢𝐬 𝐭𝐡𝐚𝐭 𝐭𝐡𝐞 𝐜𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐨𝐧 𝐪𝐮𝐚𝐥𝐢𝐭𝐲 𝐯𝐚𝐫𝐢𝐞𝐬 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐨𝐮𝐭𝐬𝐢𝐝𝐞 𝐭𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞  𝐚𝐧𝐝 𝐭𝐡𝐚𝐭 𝐭𝐡𝐞 𝐩𝐫𝐨𝐛𝐥𝐞𝐦 𝐢𝐬 𝐮𝐩𝐬𝐭𝐫𝐞𝐚𝐦 𝐨𝐟 𝐦𝐲 𝐡𝐨𝐮𝐬𝐞 𝐢𝐧 𝐭𝐡𝐞 𝐱𝐟𝐢𝐧𝐢𝐭𝐲 𝐧𝐞𝐭𝐰𝐨𝐫𝐤.

It is pointless to keep sending techs to my house to check the network interface box, my inside wiring, and cable modem.  How do I get Xfinity to check their outside equipment upstream of my house?

@XfinityChristy​ what is incredibly frustrating is a company that can't troubleshoot and fix its hardware.  It's not about being quick, but being timely; in other words, not taking weeks or months, and having to deal with new contacts and techs at each go around.

NONE of the techs mentioned checking the local infrastructure/equipment.  Both declared the problem was fixed--it wasn't.  Calling yet again, I was told that a third visit would have to be made within a 30 day window before the service complaint was escalated.  Since two techs and numerous minutes chatting or on the phone had failed to resolve the problem, it made no sense to me to spend more time on the phone and to send out another tech--and besides, the 30 day window has elapsed.

My complaint/service ticket needs elevated attention to where someone with the necessary training and experience, with xfinity's outside plant, is working on it.

Who do I contact that won't put me through the same arduous repetitive process that I have already been subjected to?  I have over 60 days of daily observations (uncorrectables & temperature data); who can I send it to that will understand it and being in a position to take the appropriate action?