time	latitude	longitude	atltitude
0	60.329	24.949	0.00
10	60.316	24.772	0.77
13	60.372	24.686	1.55
14	60.431	24.778	2.36
15	60.490	24.925	3.22
16	60.590	25.184	4.09

...

NOTES:
--------------
column names are required

delimiter = '\t' -> tab

altitude entered in km