Decimals between 15 & 16, with an interval of 0.2 between each pair of decimals

There are a couple of ways we could answer this. The obvious one is

15.2, 15.4, 15.6, 15.8

They're between 15 and 16,.2 between consecutive elements

So is

15.1, 15.3, 15.5, 15.7, 15.9

So is

15.107, 15.307, 15.507, 15.707, 15.907

I guess the answer should be something like this 0.2/0.4/0.6/0.8