Spirals from each cluster were further categorized into morning and afternoon groups.  Trace gas species were averaged at every 100 m intervals, while aerosol measurements were averaged at every 200 m intervals.  For each species the median, 10th, 25th, 75th, and 90th percentile values are plotted for each cluster.  The standard deviation, minimum, and maximum values, and number of spirals used for each statistic are tabulated for every altitude level.

Morning profiles	Afternoon profiles
O3	O3
SO2	SO2
CO	CO
Temperature	Temperature
Relative humidity	Relative humidity
Particle absorption (550 nm)	Particle absorption (550 nm)
Particle scattering (550 nm)	Particle scattering (550 nm)
Particle counts	Particle counts
Single scattering albedo (550 nm)	Single scattering albedo (550 nm)
Angstrom exponent (575 nm)	Angstrom exponent (575 nm)