Table 5.

Variables of academic teacher mobility data.

Variable	Description
from_hei	The institution of origin of the teacher.
to_hei	The destination of the mobility.
gender	The gender of the teacher.
nationality	The nationality of the teacher.
subjecthome	The subject area of the teacher at the home institution.
subjecthome1	The main subject area of the teacher at the home institution.
subjecthost	The subject area taught at the host institution.
subjecthost1	The main subject area taught at the host institution.
lengthdays	The number of days that the teacher has been abroad excluding travel days.
lengthhours	The number of hours the teacher taught abroad.
seniority	The degree of experience (seniority) of the teacher.
levelteaching	Level of teaching cycle at the Host Institution.
language	The language subjects are taught in the Host Country.
sevsupp	The total value of the grant awarded for a disability during a visit by a teacher. Currency in Euros.
subsistence	The overall subsistence expenses excluding additional funding for disabilities. Currency in Euros.
travel	The overall travel expenses excluding additional funding for disabilities. Currency in Euros.
isfirst	This field indicates whether this is the first teaching assignment mobility funded by Erasmus for the academic member of staff.
year	The academic year of teaching abroad.
distance	Geodesic distance between the home and host cities in km, calculated based on the geocodes of the cities.
direction	Geodesic direction from the starting point to the endpoint in degrees, calculated based on the geocodes of the cities.