Thanks, Henrik. Actually, what I am looking for is a way to delete the first line of every group of storms (eg. the shorter list that starts with the AL...) and append it to each longer list below it that starts with 8 integers. I don't need to transform or define the qualities of the elements. Example below . Thanks!
Original:
{AL011852, UNNAMED, 45} (* storm name, summary *)
{18520819, 0000, , TS, 20.5N, 67.1W, 60, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999}
{18520819, 0600, , TS, 20.7N, 67.1W, 60, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999}
etc.
Change to:
{AL011852, UNNAMED, 45,18520819, 0000, , TS, 20.5N, 67.1W, 60, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999}
{AL011852, UNNAMED, 45,18520819, 0600, , TS, 20.5N, 67.1W, 60, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999, -999}
etc.
I hope that's clearer. Thanks again. Jon
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