Hi,
the reference is in PER-TOF-TOC-12-10 P 5/14 (TEMPERATURE ENTRY).
(...)Check that the resulting speeds are higher than the minimum speeds displayed on the RTOW
chart and that V2 is higher than the VMU limited speed (Refer to PER-TOF-TOD-25-20 MINIMUM
V2 LIMITED BY VMU/VMCA (KT IAS)).
(...)If OAT is higher than TVMC (line 3) or if the above speed check is not fulfilled, apply ΔW correction
from line 3 and ΔV1/ΔVR/ΔV2 corrections from line 4. No speed check is required.
Your speed are 149/150/151.