AeroPod, PowerPod and Newton

Is there a way of “guess-timating” the Crr value for surfaces such as grass, gravel, mud?

Grass/gravel is about 0.008

Mud is higher: about 0.01

Thanks for that. In a post ride review can you highlight different sections and alter Crr for each segment (as in cyclocross race) or can you only set Crr for whole ride?