| BUILDING | MECHANICAL VENTILATION | NATURAL VENTILATION | DIFFERENCE IN TIME |
| RH below 40% | 7.0 months | 5.0 months | 2.0 months (17% of time) |
| RH below 30% | 7.0 months | 1.5 months | 5.5 months (46% of time) |
| RH below 20% | 5.0 months | 0.0 months | 5.0 months (42% of time) |