I have some data measured at non uniform time intervals, for example:

```
Time(s) Value(KB)
2.1 304
43.0 400
60.2 380
87.0 440
89.5 445
102.2 460
124.3 470
```

I have this in a CSV with the time increasing from T=0 as above, and I want to sample `Value`

at a periodic interval (60 seconds) to match some other data that I have.

I was trying to use Microsoft Excel 2007 to accomplish the task of reducing the data to just the values that are closest to each 60 second interval (there is a bit of data so whether it is always higher (`124.3`

), or lower (`102.2`

), or absolute value closest (`124.3`

), is not important). I have tried applying a formula to the Time column (MOD(Tn, 60)) but I cannot hit on a way to take this output (Time values cycling between 0 and 60) and filter out everything but the closest value to 60 in each cycle. Any suggestions?