If the first bar chart for {HEAD ~ the power input} is stepped, this will be no cause for concern, in general, because uniform conditions of evaporation are less important than uniform conditions in the condensation from {TAIL ~ the vapor stream} into the film 
If the first bar chart for { HEAD ~ the power input } is stepped , this will be no cause for concern , in general , because uniform conditions of evaporation are less important than uniform conditions in the condensation from { TAIL ~ the vapor stream } into the film
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH