Ah, OK, here is the csv-data of the last 30 days.
Äh, it is not, the forums software does not allow to upload files. How can I do that? 
Maybe already some background about the nature of the data. The sensor send it’s normal data regularly (e.g. once per hour). The GPS position is only sent when the sensor is moved. That means it can be, that I have to look far back in the data, to find the last sent GPS position.
Currently it happened 2 days ago.