Table 3.3: Summary data for NO₂ monitoring in Hamilton

	1998	1999
One-hour average NO₂ concentrations
% valid data	77%	83%
Hours >200 gm^-3	0	0
99.9 %ile gm^-3	84	97
Maximum gm^-3	96	170
24-hour average NO₂ concentrations
% valid data	76%	82%
Days >100 gm^-3	0	0
99.9 %ile gm^-3	45	37
Maximum gm^-3	49	61

Table 3.3: Summary data for NO2 monitoring in Hamilton