My powerwall is 10x batteries where each one is 14s of 260ah packs (with 18650 cells in parallel).
Early in my journey, I build a 14s battery where 10 of the packs had cells with an IR of 60mOhm'ish and 4 of the packs has cells with 220mOhm'ish. A 3.6 x difference in IR. This resulted in the 4 packs having different voltages thru the charge/discharge curve compared to the other 10 packs. The battery worked but was not able to balance 'reasonably' (within 50mv) the 4 x packs with the other 10 - they would diverge as much as 150mv'ish (1.5v). This was just 'too much' for me operationally.
Based on this, I might suggest a 3.6 x difference between packs in series did not work for me.
You're data gives me a 19.8 average R. Extremes would be 29.76 / 13.7 = 2.17x. Average hi/low deltas are more like 1.5x.
Personally, I would proceed.... the battery will work and the worst case issues will be
1) Cannot keep it balanced / battery is not long term stable.
2) Even if it's stable, is the max difference may not be small enough for you're operations. For example, let's say you have a 80mv max difference thru the charge/discharge curve. This means that you shouldn't charge 100% but need to stay 0.8v below max charge voltage (to allow for pack(s) that might be 80mv higher than the middle). This may or not be OK 'operationally' depending on you're situation.
So I would proceed (nothing dangerous as long as you don't exceed the worst pack's specs) but ask myself, what is the cost of disassembly and reassembly with more closely matched packs in series in case it's not operationally the way you want. If you're willing to take this chance and/or it's not a huge deal....
----------------------------
My comments are based on anecdotal experiences with 18650 cells - take them with a grain of salt! And perhaps some others will weigh in.
And, will be interested to know what you decide and how it turns out.
