The RITS system at Niwot Ridge. Shown from left to right are the data-recording
system, analog-to-digital converter boxes, Hewlett-Packard GC (housing channels
A and B), and the Shimadzu GC (housing channel C). On the wall above the system
is the environmental stream intake manifold. Cylinders holding calibration gases,
P5 and N2 carrier gases, and pnuematic air (for driving the stream
select valve) are out of the picture to the right.