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. Author manuscript; available in PMC: 2018 Jan 17.

Published in final edited form as: Environ Int. 2017 Feb 23;102:66–73. doi: 10.1016/j.envint.2016.12.025

Table 2.

SO₂ and PM_2.5 Concentrations (SE) in Haifa, Tel Aviv, and Ashdod 2000–2011

	Period	Mean (SE)		p-value (comparing to prior period)^*
		SO₂ (ppb)	PM_2.5 (μg/m³)	SO₂	PM_2.5
a. Haifa
High	Jan 2000 – May 2002	6.66 (0.10)	21.6 (0.5)
Medium	Jun 2002 – Oct 2009	3.23 (0.03)	21.0 (0.4)	<0.001	0.151
Low ^**	Nov 2009– Dec 2011	0.50 (0.02)	18.0 (0.5)	<0.001	0.003
b. Tel Aviv
High	Jan 2000 – May 2002	8.68 (0.04)	23.1 (0.4)
Medium	Jun 2002 – Jun 2006	2.11 (0.01)	27.2 (0.5)	<0.001	1.000
Low	Jul 2006 – Dec 2011	1.69 (0.01)	22.1 (0.3)	<0.001	<0.001
c. Ashdod
High	Jan 2000 – May 2002	14.55(0.13)	25.8 (0.6)
Medium	Jun 2003 – Dec 2003	4.09 (0.08)	25.3 (1.3)	<0.001	0.354
Low	Jan 2004 – Dec 2011	2.75 (0.02)	28.4 (0.6)	<0.001	0.995

^*

1-tailed t-test

^**

Station closed in November 2009 and started operating on natural gas in November 2011