Rodinal is a single developing agent p-aminophenol

This is my collection of developing agent temperature coefficients so far:

Ratio of increase in development time that occurs when the temp. is increased 10C.

Temperature coefficient = T1/T2

When the developer contains two developing agents, the coefficient is useful over a limited range.

(Basic photographic materials and processes-Stroebel, Current, Zakia)
1.3 Metol
1.9 Pyrogallol
2.5 Hydroquinone
1.9 MQ

Mees & James

2.6 p-aminophenol

Multi developer coefficient's (i.e. MQ) work only over a range of temps. I don't have the limits, sorry.