nasa cdf (version 3) {
// global attributes:
		:TITLE = "Swarm constellation synthetic field data" ;
// variable attributes, one line per entry (which variable each belongs to is not shown):
		FIELDNAM = "time in Modified Julian Days 2000; t=0 on Jan 1, 2000, 00:00 UT" ;
		FIELDNAM = "radius [km]" ;
		FIELDNAM = "geographic co-latitude theta [deg]" ;
		FIELDNAM = "geographic longitude phi [deg]" ;
		FIELDNAM = "geocentric radial component B_r for the 8 constituents [nT]" ;
		FIELDNAM = "geocentric theta component B_theta for the 8 constituents [nT]" ;
		FIELDNAM = "geocentric phi component B_phi for the 8 constituents [nT]" ;
		FIELDNAM = "unit vector n_x of flight direction" ;
}