name	unit	description	expression
adv	mol/m3/s	advection	u/dx * (left(c)-c)
advL	mol/m3/s	advection over upstr. boundary	u/dx * (cUp(time)-c)
dis	mol/m3/s	dispersion	d/(dx^2) * (left(c) - 2*c + right(c))
disL	mol/m3/s	disp. over upstr. boundary	2 * d/(dx^2) * (cUp(time) - c)
disR	mol/m3/s	disp. over downstr. boundary	2 * d/(dx^2) * (cDn(time) - c)
