Well HKJ, thank you for your candidness. You are right, I measure IR now completely different way than last year. :-)
I understand that there is constant development when you are measuring, still something new, different. And understand that is difficult to cover up these changes in such quantity of your measurement. But quantity should not outweigh quality.
Your work is higly appreciated in the Li-ion cells testing world, which is obligate. From your answer I understand that you know that your IR measurement is not perfect as should be.
Though when 4-wire measurement was not comply with the requirements, you was able to do upgrade :
https://lygte-info.dk/info/batteryTestImprovement%20UK.html