Troposphere vertical view on  PY to ZD7 path - just a very relative approach...
Grid Analysis and Display System (GrADS) is used to build images.
Remember,  tropo happens if  above a given height , RH decreases and T° higher than standard , giving dry/warm area in altitude.

Humidity color scale used in images (%)
(rose - red colors are equivalent to very good tropo, with RH decrease, T° increase, and if not similar scale with lower height air mass)

<=10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 >90

PY to ZD7 path
use arrow or click to change time