Rebuild time series to same size time series

Hi,

I have some data organized on a 1x16 cell. Each cell has a #x36 double. Where # can vary from cell to cell. Column 34 of each double has the time vector. I would like to cut the 16 doubles for a specific time (stored in column 34, for example at 10800), so that my 1x16 cell has now for each cell a 10800x36 double.

Thanks