Table 2.

Relative abundance of the top 20 bacterial, archaeal, eukaryotic and viral species in the classrooms of high schools in Shanxi, China. The species are ordered according to the abundance. “uc” means uncharacterized.

Bacteria	Abundance (%)	Archaea	Abundance (%)	Eukaryota				Virus	Abundance (%)
				Fungi	Abundance (%)	Protista	Abundance (%)
uc Actinobacteria	5.10	Candidatus Nitrocosmicus oleophilus	0.0029	Alternaria alternata	0.222	Neospora caninum	0.065	Silicibacter phage DSS3phi2	0.044
uc Psychrobacter	3.21	Candidatus Nitrosocosmicus exaquare	0.0012	Alternaria solani	0.102	Heteromita globosa	0.010	uc Pa6virus	0.035
Micrococcus luteus	3.08	uc Halobacteria	0.0011	Aspergillus glaucus	0.044	Babesia bigemina	0.005	uc virus	0.029
uc Brachybacterium	1.80	Halorubrum trapanicum	0.0009	uc fungus	0.013	Albugo laibachii	0.005	Psychrobacter phage Psymv2	0.008
Janibacter indicus	1.59	Salinigranum rubrum	0.0008	Malassezia restricta	0.009	uc Pyropia	0.004	Caudovirales phage	0.004
Kocuria palustris	1.50	Haloterrigena turkmenica	0.0008	Didymella pinodes	0.008	Sterkiella histriomuscorum	0.003	Caudovirales phage	0.004
Serinicoccus sp. JLT9	1.32	Halobacterium hubeiense	0.0006	Mucor racemosus	0.007	Pyropia haitanensis	0.003	Psychrobacter phage pOW20-A	0.003
Kocuria turfanensis	1.27	Haloferax gibbonsii	0.0006	Saccharomyces cerevisiae	0.006	Aureococcus anophagefferens	0.003	Citrus endogenous pararetrovirus	0.003
uc Microbacterium	1.26	Salinarchaeum sp. Harcht-Bsk1	0.0006	Aspergillus aculeatus	0.005	Bodomorpha sp. HFCC57	0.002	Alphapapillomavirus 2	0.002
uc Xanthomonadaceae	1.21	Halorientalis sp. IM1011	0.0005	Stemphylium lycopersici	0.005	Plasmodium vivax	0.002	uc virus	0.002
uc Micrococcales	1.20	uc Candidatus Nitrosocosmicus	0.0005	Parastagonospora nodorum	0.005	Salpingoeca rosetta	0.002	uc Siphoviridae	0.002
Agrococcus carbonis	1.17	Halobiforma lacisalsi	0.0005	Tremella fuciformis	0.004	Emiliania huxleyi	0.002	uc virus	0.001
uc Paracoccus	1.13	Natronococcus occultus	0.0005	Pichia kudriavzevii	0.004	Plasmodium malariae	0.002	Human endogenous retrovirus K	0.001
uc Bacteria	1.12	Halopiger xanaduensis	0.0005	Malassezia globosa	0.003	Cavenderia fasciculata	0.002	uc virus	0.001
Acinetobacter johnsonii	1.11	Halovivax ruber	0.0005	Ustilago hordei	0.003	Colpodella angusta	0.001	Sfi21dt1virus	0.001
uc Nocardioidaceae	0.99	Halopenitus persicus	0.0005	Leptosphaeria biglobosa	0.003	Plasmodium reichenowi	0.001	Cyanobacteria phage AS-1	0.001
uc Streptococcus	0.99	uc Natrialbaceae	0.0005	Aspergillus steynii	0.003	Vaucheria litorea	0.001	Pa6virus	0.001
uc Pseudomonas	0.95	Haloarcula taiwanensis	0.0005	Diaporthe longicolla	0.003	Plasmodium relictum	0.001	Alphapapillomavirus 9	0.001
uc Nocardioides	0.85	uc Archaea	0.0005	Alternaria tenuissima	0.003	Thecamonas trahens	0.001	Mollivirus sibericum	0.001
uc Proteobacteria	0.83	Halobacterium sp. DL1	0.0004	Phoma sp. 1 OB-2014	0.002	Plasmodium sp. DRC-Itaito	0.001	Pseudomonas virus PB1	0.001