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. Author manuscript; available in PMC: 2013 Jun 19.
Published in final edited form as: J Occup Environ Med. 2008 May;50(5):570–575. doi: 10.1097/JOM.0b013e3181638640

Fig. 2.

Fig. 2

Comparison of nicotine concentrations in offices and hallways before and after the implementation of smoke-free policy in an office building (2 samples above 40 μg/m3 from offices with at least one smoker before the implementation of the policy were not shown in the graph: 56.4 and 80.16 μg/m3; the number of samples in each location is shown inside parentheses).