Table 7.

Comparison of hourly average pollutant concentrations from Logan, Utah between wind sectors.^a

Sectors	NO2	NO	NOx	NOy	NOz	O3	PM10	PM2.5	PM10-2.5
E-SE
E-NE
E-NW									1.5b
E-S					−2.1c	−5.6c	−12.4d	−8.5d	−4.0d
E-SW	3.8c					−6.5d	−8.0b	−4.4c	−2.9c
E-W								−3.9b
E-N		0.7c					3.6b		2.2c
SE-NE
SE-NW
SE-S							−12.3c	−7.6b	−4.8c
SE-SW						−6.4c			−3.6b
SE-W	−5.0b
SE-N
N-NW						4.0b
N-S		−2.9d	−6.6c	−11.9c	−2.9d		−21.4d	−15.4d	−6.6d
N-SW		−1.5d		−6.1b	−1.8d		−14.9d	−9.4d	−6.0d
N-W	−6.3c	−1.3d	−10.8d	−14.2d	−1.5c	7.2d	−11.3d	−7.4d	−3.3d
N-NE
NW-S		−2.4d		−9.4d	−2.7d	−5.9d	−17.6d	−12.8d	−5.7d
NW-SW	2.2b	−1.2d			−1.6d	−7.5d	−13.0d	−7.9d	−5.0d
NW-W	−4.8d	−0.7d	−8.2d	−11.3d	−1.3d	3.1c	−9.1d	−6.1d	−2.8d
NW-NE
S-SW
S-W	−5.3c					10.1d	9.2b		3.1b
S-NE		2.1d	5.8b	9.7c	2.4d		15.6d	11.4d	5.2d
W-SW	7.3d		7.0c	7.3c		−11.0d
W-NE	5.5c	0.5c	9.2d	11.4d	1.0c	−6.2d	7.4c	5.2d	1.9b
NE-SW		−1.0d			−1.4c	−3.4b	−11.4d	−6.7d	−4.6d

Notes. The Hodges-Lehmann estimates of the magnitude of the differences are given as A – B, where A-B is the wind sector pair in the leftmost column. Units are ppb for the trace gaseous species and μg/m³ for PM.

^aEmpty cells indicate no statistically significant difference (10% level).

^bStatistically significant difference (10% level).

^cStatistically significant difference (5% level).

^dStatistically significant difference (1% level).