... fast as SHS-RSP. Figure 7 plots all of the experiments (I-VI)together, adding the smokers to the smoldered cigarettes. There is considerably morescatter in the data, likely due to the more erratic ... which housed the RSP monitor. The intakes and exhausts of the concealedmonitors were connected to the outdoor environment. The monitors were deployed about the UMBC campus in a variety of locations ... numbers of smokers or cigarettes, and ring diameter. RSP is shown on the right-hand vertical axis, PPAH on the left-hand vertical axis, and the ring-radius (i.e., the smoker -to- monitor distance)...