Which one to choose? Mean or Median

#1
I have the past two months vehicle arrival time data for a particular vehicle. To find the consistency of arrival time which one should I go for? Mean or Median?

Thanks
Prashanth.
 

Dason

Ambassador to the humans
#2
I don't think either tell you much about the consistency. Sounds like you want to look at some sort of measure of variability - such as the standard deviation or IQR.