How to find median of a tertile?

[joachimg]

I'd like to find the median within each tertile of my dataset (0-33.33%, 33.34-66.67%, 66.68-100%). I know what the values of the tertiles are (33.33=5, 66.67=18) and the min and max in my dataset (0.2, 96). Is there a way to write code to get the three medians? I might be overthinking this. Any help is much appreciated. Thanks! 

[PaigeMiller · Accepted solution]

Tertile medians would be the same as if you split the data into 6 groups, the boundary between groups 1 and 2 being the median of the lower tertile, and so on.

[joachimg]

Perfect! Thanks a million.