Table 2.

Geometric mean (GM) in number of spores per cubic meter for total concentration and four most frequent fungal genera in indoor and outdoor samples by season

	All data			Spring 2003			Spring 2004			Fall 2003 and 2004
Genera	GM	Minimum	Maximum	GM	Minimum	Maximum	GM	Minimum	Maximum	GM	Minimum	Maximum
Indoor
	n = 144			n = 25			n = 45			n = 74
Total count	145	2	2295	277	10	1252	54	3	568	229	2	2295
Cladosporium	30	<2	920	35	<2	333	7	<2	92	52	<2	920
Penicillium/Aspergillus	23	<2	1205	160	10	612	30	<2	392	15	<2	1205
Basidiospores	16	<2	791	15	<2	133	3	<2	95	36	<2	791
Ascospores	7	<2	248	15	<2	116	3	<2	45	10	<2	248
Outdoor
	n = 147			n = 37			n = 38			n = 72
Total count	2469	438	10,417	2474	1219	5829	1170	438	2685	3658	836	10,417
Cladosporium	365	0	6565	321	33	2101	141	0	745	691	11	6565
Penicillium/Aspergillus	1144	147	3428	1258	621	2868	680	147	1661	1433	227	3428
Basidiospores	113	0	1188	114	3	966	72	0	273	318	0	1188
Ascospores	202	0	1424	492	222	1424	76	0	632	226	33	1287

^*Fall 2003 and 2004 datasets were combined because no differences were observed in average concentrations.