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Table 2 Ambient temperature and summary statistics for PCB concentrations (ng/m3) in indoor air of classrooms of an elementary school over a 14-month period

From: Mitigation of building-related polychlorinated biphenyls in indoor air of a school

Sample Date Temperature (Celsius) AER
(h-1)
N Mean Standard Deviation Coefficient
Of Variation
Min Max
11/4/2010 9.3 2.0 1 105 -- -- 105 105
11/11/2010 8.7 2.8 7 83 40.5 48.8 12 128
11/20/2010 9.7 2.4 8 103 40.6 39.7 25 142
11/24/2010 6.7 2.9 2 94 58.0 61.9 53 135
12/2/2010 1.7 4.3 1 109 -- -- 109 109
2/23/2011 1.8 3.1 5 101 27.2 26.9 76 146
4/20/2011 6.0 2.4 3 109 23.9 22.0 93 136
4/21/2011 11 2.0 3 84 46.6 55.5 44 135
5/21/2011 22 3.6 8 167 44.8 26.8 103 224
6/9/2011 27 3.1 3 276 117.5 42.6 152 386
7/13/2011 28 3.6 3 275 87.3 31.8 175 337
7/14/2011 22 2.9 3 99 69.7 70.3 43 177
10/7/2011 14 3.8 8 79 21.0 26.6 52 114
12/29/2011 -2.1 2.8 10 56 20.9 37.5 11 85
  1. N = number of observations; Min = minimum concentration; Max = maximum concentration