Table 3.
City-specific determinants of hopane concentrations in house settled dust
| City | Final model with regression coefficients | Partial R2 | Model Adj.R2 |
|---|---|---|---|
| Edmonton |
log (hopanes) = 3 – 0.13 cleaning frequency |
0.78 |
0.80 |
| - 1.5 Smooth Flooring |
0.78 |
||
| −0.15 Air Conditioning |
0.35 |
||
| Toronto |
Log (hopanes) = 2.69 -1.03 Smooth Flooring |
0.29 |
0.45 |
| −0.008 Elevation |
0.13 |
||
| + 0.88 Attached Garage −0.66 Detached Garage |
0.13%* |
||
| Windsor** |
log (hopanes) = 5.6 + 0.5 elevation |
0.36 |
0.39 |
| + 0.17 RD1_100 |
0.13 |
||
| Winnipeg |
log (hopanes) = 1.45 – 0.057Heating degree days |
0.17 |
0.33 |
| – 1.33 multifamily house |
0.16 |
||
| Vancouver | log (hopanes) = 1.9 – 0.09 Heating Degree Days |
0.09 |
0.10 |
| – 0.07 Shoe removal | 0.07 |
* The Garage variable has three categories: No garage, Attached garage and Detached garage.
** In Windsor, elevation and distance to the Ambassador Bridge were strongly and significantly correlated. An alternative model with Distance to Ambassador Bridge yielded similar results, yet with smaller R2