Weather Statistical Investigation - By Quinlan

This week we are learning to see what the wind Speed was this week or last week. I found out that on the 23rd of February at night 
time at 6.00 was 26 km/h.

I conclude that at 12.00 at night the wind speed will be 11 km/h and at 12.00 in the afternoon will be 22 km/h.

The clearest graph to read is the one up the top because it's the easiest one to understand and so you can explain it properly.
The Graph that's in the middle is the one that I don't really understand because it has to many numbers and lines.