mediumclouds
The cloud base can be estimated using the formula:
A
(T - Td) × 400 ft
B
Spread × 400 ft
C
(T - Td) × 1000 ft
D
Spread × 100 ft
Checking member access
One moment while we confirm your plan so paid members never see checkout by mistake.
Checking member access before showing upgrade options
Keep practising
Take a timed quiz with random questions, or estimate your training costs.