What did you plan to do with the 166 and the 216?
What tools do you get? Can you use the five points to find the maximum? It's unlikely to happen at a measurement point. I used a method that suggests 4.12 sec. What do you get?
Knowing 4.12 sec MAY suggest a landing time of 8.24 sec, but that might be ignoring the first two seconds.
Another method suggests a landing time of 8.103 seconds.
You must figure out how to use your data.