Variation of VR/V2 with temperature?

[HazelNuts39]

The speed increment between Vr and V2 incurred during rotation and transition to steady climb increases with increasing thrust-to-weight ratio, i.e. with reducing temperature:

A V1 121 VR 123 V2 136 V2-Vr 13
B V1 122 VR 124 V2 135 V2-Vr 11
C V1 122 VR 125 V2 135 V2-Vr 10
D V1 124 VR 126 V2 135 V2-Vr 9
E V1 125 VR 127 V2 134 V2-Vr 7
F V1 128 VR 128 V2 134 V2-Vr 6

V1 is selected to 'balance' the accelerate-stop distance and the take-off distance. That is a different subject from the original post that I don't really want to get into.

PS
See also my post #4 for TAS/CAS.