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Could you tell which one (if none, please tell me the good one) is appropriate?

I used the time unit of minutes.
I used the time unit of minute.
I used the time unit of the minute.
I used the time unit of the minutes.


What I want to say is that the data are in min rather than hr or sec.
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Hi,

I suggest simply the data are given in minutes or the figures are in terms of minutes.

Clive
Comments  
Thanks much, Clive.