TABLE 5.
Interannual variability of AUCs for the four indicator variablesb
| Indicator variable | Yr | AUC (SE) | na |
|---|---|---|---|
| Previous day's Enterococcus density | 1996 | 0.55 (0.088) | 109 |
| 1997 | 0.78 (0.067) | 167 | |
| 1998 | 0.78 (0.051) | 165 | |
| 1999 | 0.60 (0.136) | 114 | |
| 2000 | 0.75 (0.045) | 184 | |
| 24-h antecedent rainfall | 1996 | 0.79 (0.068) | 41 |
| 1997 | 0.79 (0.081) | 44 | |
| 1998 | 0.82 (0.048) | 61 | |
| 1999 | 0.90 (0.069) | 45 | |
| 2000 | 0.78 (0.048) | 56 | |
| 48-h antecedent rainfall | 1996 | 0.81 (0.061) | 55 |
| 1997 | 0.79 (0.081) | 53 | |
| 1998 | 0.82 (0.051) | 77 | |
| 1999 | 0.86 (0.077) | 55 | |
| 2000 | 0.78 (0.053) | 67 | |
| 96-h antecedent rainfall | 1996 | 0.75 (0.044) | 65 |
| 1997 | 0.82 (0.081) | 61 | |
| 1998 | 0.83 (0.049) | 98 | |
| 1999 | 0.81 (0.089) | 72 | |
| 2000 | 0.71 (0.049) | 95 |
a
n, number of unique data points that went into the calculation of AUC.
b
Results are from data averaged over all beaches.