Convert directory of .pos files to a single .json file
Daily PBO GPS position time series are stored as .pos files and available at: ftp://data-out.unavco.org/pub/products/position
The .json format applies the following pattern:
[ { "name": "000841", "start": 985928400, "lon": [139.06990407, 139.069904, 139.06990413, ...], "lat": [34.949757897, 34.949757882, 34.949757941, ...] },{ "name": "000842", "start": 982818000, "lon": [...], "lat": [...] },{ ...
{ "name": "99R004", "start": 1364875200, "lon": [...], "lat": [...] },{ "name": "99R006", "start": 1364875200, "lon": [...], "lat": [...] } ]