Record "dens", output of TOMION-I (AKA TOMION-V1): see the next two (consecutive) examples,

60439.29166667  1873  0.4766266382E-02  0.86747E-04 dens      8315   450.0   11.3230  -27.0816   2   8   1     90.43818
60439.29166667  1891  0.1883099385E-02  0.64357E-04 dens      6989  1130.0   11.3230  -27.0816   2   8   2   1055.11207

They contain the following fields per line,

tdjm,iunk,x0(iunk),sx0,kindx0(iunk),konvar(iunk),hc(icenp),rac(icenp),decc(icenp),nc2ijk(icenp,1),nc2ijk(icenp,2),nc2ijk(icenp,3),xlength_ray_in_cell

that can be briefly described as:

1	60439.29166667		tdjm			Time / modified julian days
2	1891			iunk			Integer index of unknown
3	0.1883099385E-02	x0			Electron Density, Ne / meters_of_L1-L2/km
4	0.64357E-04		sx0			Standard deviation of Ne / meters_of_L1-L2/km
5	dens			kindx0			Kind of unknown
6	6989			konvar			Number of observations affecting this unknown
7	1130.0			hc			Voxel height / km
8	11.3230			rac			Right ascension / deg
9	-27.0816		decc			Declination / deg
10	2			nc2ijk(1)		Voxel i-index
11 	8			nc2ijk(2)		Voxel j-index
12	2			nc2ijk(3)		Voxel k-index
13	1055.11207		xlength_ray_in_cell	Length of transmitter-receiver ray within the given voxel / km