Table 1

Summary statistics for PM₁₀ mass concentration distributions (μg/m³) for Saharan and non-Saharan dust days

	Num	Mean	SD	Min	Percentiles			Max	IQR
	Num	Mean	SD	Min	25th	50th	75th	Max	IQR
Whole year
Distribution of daily concentrations
All days	1614	41	23	7	25	35	52	164	27
Saharan dust days	203	38	18	10	25	34	50	102	25
Non-Saharan dust days	1034	42	25	7	24	35	52	164	28
Distribution of differences in exposure between cases and controls
	125100	−0.4	27.4	−127	−14	0	13	127	27
Hot season
Distribution of daily concentrations
All days	673	28	11	7	21	27	35	66	14
Saharan dust days	130	32	12	10	22	29	40	66	18
Non-Saharan dust days	467	27	9	7	20	26	33	55	13
Distribution of differences in exposure between cases and controls
	47862	−0.6	13.4	−52	−9	−1	8	52	17
Cold season
Distribution of daily concentrations
All days	941	51	25	9	32	47	63	164	31
Saharan dust days	73	50	21	10	30	52	66	102	36
Non-Saharan dust days	567	54	27	9	34	50	67	164	33
Distribution of differences in exposure between cases and controls
	77238	−0.2	33.2	−127	−20	0	20	127	40