| Hung appropriately to off-gas | 47 % |
| In the dark, protected from UV light | 20 % |
| Both | 17 % |
| Neither | 17 % |
| Total | 30 |
| Hung appropriately to off-gas | 47 % |
| In the dark, protected from UV light | 20 % |
| Both | 17 % |
| Neither | 17 % |
| Total | 30 |