[Electronpusher0]

I still plan on plotting the curve, especially as there is a definate thermal gradient between the element (where the thermistor is) and the tip of the bit.
This is due to the relatively loose fit of the bits over the element on the Hakko clones.
Some users have reported an improvement using thin copper or aluminium (cut from a drinks can) wrapped around the element to fill the gap.

I did find the attached curve on line.
As I say I will plot my own.

Peter