| Isolated microorganisms | Percentage (%) counts | |||
| Airborne | Limestone surface | |||
| Outdoor | Indoor | Outdoor | Indoor | |
| Bacillus cereus OK447647 | 53.9 | 43.3 | 54.5 | 42.9 |
| B. subtilis OK447648 | 30.5 | 33.9 | 24.2 | 32.1 |
| Micrococcus ruseus | 3.2 | 3.1 | 3.03 | 0 |
| M. luteus | 0 | 7.9 | 3.03 | 3.6 |
| Staphylococcus aureus | 6.2 | 6.3 | 6.1 | 10.6 |
| Streptomyces sp. | 4.5 | 4.7 | 3.03 | 3.6 |
| Serratia marcescens OK447650 | 0.9 | 0.5 | 4.8 | 5.9 |
| Pseudomonas oryzihabitans OK447649 | 0.4 | 0.3 | 1.3 | 1.2 |
| Aspergillus flavusLink | 34.2 | 23.8 | 27.8 | 25.5 |
| A. niger Tiegh | 19.7 | 31.7 | 36.7 | 47.3 |
| A. sydowi (Bainier & Sartory) Thom and Church | 5.3 | 0 | 0 | 0 |
| A. nidulans (Eidam) G. Winter | 1.3 | 0 | 0 | 0 |
| A. terreus | 1.3 | 0 | 0 | 0 |
| A. galaucus | 1.3 | 0 | 11.4 | 3.6 |
| Penicillium chrysogenum Thom | 26.3 | 14.3 | 3.8 | 3.6 |
| P. corylophyllum DiercKX DiercKX | 0 | 0 | 6.3 | 0 |
| P. sp. | 0 | 3.2 | 3.8 | 3.6 |
| Cladosporium cladosporoids (Frsen) G. A. de Vries | 10.5 | 22.2 | 6.3 | 1.8 |
| Alternaria alternate (Fr) Keissl | 1.3 | 0 | 0 | 1.8 |
| Ulocladium charatum (preuss) E. G. Simmons | 0 | 0 | 0 | 9.1 |
| Curvularia lanata | 0 | 0 | 11.5 | 0 |
| Syncephalustrum rhizopi Vuill | 1.3 | 4.8 | 0 | 0 |
| Mucor | 0 | 0 | 1.3 | 3.6 |
| Sterile mycelia | 0 | 0 | 1.3 | 0 |