| Norah Head Outfall | |||||||||||||||
| Period 96-98 | |||||||||||||||
| Statistic | FLOW | NFR | BOD | Grease&Oil | NH4 | pH | Chlorine | Organic N | TP | NO3 | NO2 | COD | Res.Cl | Alkalinity | |
| n | 730 | 103.0 | 103.0 | 10.0 | 102.0 | 92.0 | 102.0 | 100.0 | 102.0 | 102.0 | 0.0 | 103 | 0 | 0 | |
| Mean | 20479 | 24.7 | 19.4 | 2.9 | 6.7 | 7.3 | 238.6 | 4.2 | 7.6 | 7.6 | . | 69 | . | . | |
| Std Dev | 8108 | 9.8 | 6.0 | 2.5 | 4.2 | 0.2 | 39.8 | 2.0 | 1.0 | 4.4 | . | 14 | . | . | |
| Min | 0 | 8.4 | 9.0 | 0.0 | 0.6 | 6.7 | 116.0 | 1.4 | 4.4 | 0.0 | . | 41 | . | . | |
| Max | 49195 | 70.0 | 36.8 | 6.5 | 25.2 | 7.9 | 340.0 | 14.0 | 9.8 | 20.0 | . | 102 | . | . | |
| 10%ile | 10047 | 14.4 | 12.7 | 0.0 | 2.0 | 7.0 | 188.0 | 2.7 | 6.3 | 4.0 | . | 51 | . | . | |
| 25%ile | 15154 | 18.0 | 15.4 | 0.0 | 3.9 | 7.2 | 216.0 | 2.8 | 7.1 | 4.0 | . | 59 | . | . | |
| 50%ile | 20426 | 22.8 | 19.3 | 3.5 | 5.7 | 7.3 | 240.0 | 3.9 | 7.8 | 6.0 | . | 68 | . | . | |
| 75%ile | 25760 | 29.6 | 22.1 | 4.6 | 8.4 | 7.5 | 264.0 | 4.8 | 8.4 | 10.0 | . | 78 | . | . | |
| 80%ile | 27036 | 32.4 | 23.5 | 5.3 | 9.2 | 7.5 | 274.0 | 4.8 | 8.5 | 12.0 | . | 81 | . | . | |
| 90%ile | 31070 | 36.4 | 27.3 | 6.3 | 12.9 | 7.7 | 288.0 | 6.3 | 8.7 | 12.0 | . | 85 | . | . | |
| 95%ile | 34325 | 42.4 | 30.4 | . | 13.4 | 7.7 | 300.0 | 6.9 | 9.2 | 16.0 | . | 93 | . | . | |
| Period 96-97 | |||||||||||||||
| Statistic | FLOW | NFR | BOD | Grease&Oil | NH4 | pH | Chlorine | Organic N | TP | NO3 | NO2 | COD | Res.Cl | Alkalinity | |
| n | 365 | 51.0 | 51.0 | 7.0 | 51.0 | 46.0 | 51.0 | 50.0 | 51.0 | 51.0 | 0.0 | 51 | 0 | 0 | |
| Mean | 20109 | 26.2 | 18.4 | 2.7 | 6.6 | 7.3 | 250.7 | 4.3 | 7.7 | 7.9 | . | 70 | . | . | |
| Std Dev | 7662 | 10.5 | 5.7 | 2.4 | 4.0 | 0.2 | 40.2 | 1.7 | 0.9 | 4.7 | . | 15 | . | . | |
| Min | 862 | 11.6 | 9.0 | 0.0 | 0.6 | 6.9 | 116.0 | 1.4 | 5.8 | 0.0 | . | 47 | . | . | |
| Max | 43528 | 70.0 | 36.7 | 6.0 | 18.5 | 7.8 | 340.0 | 12.3 | 9.4 | 20.0 | . | 100 | . | . | |
| 10%ile | 10280 | 14.8 | 10.2 | . | 2.0 | 7.0 | 210.0 | 2.4 | 6.6 | 4.0 | . | 51 | . | . | |
| 25%ile | 14682 | 18.8 | 14.3 | 0.0 | 3.6 | 7.1 | 228.0 | 3.4 | 7.1 | 4.0 | . | 56 | . | . | |
| 50%ile | 20039 | 26.4 | 18.9 | 3.0 | 5.6 | 7.2 | 250.0 | 4.2 | 7.8 | 6.0 | . | 68 | . | . | |
| 75%ile | 24991 | 32.4 | 20.7 | 4.6 | 9.0 | 7.4 | 276.0 | 5.0 | 8.3 | 10.0 | . | 82 | . | . | |
| 80%ile | 26258 | 32.8 | 21.1 | . | 9.2 | 7.4 | 284.0 | 5.3 | 8.4 | 12.0 | . | 83 | . | . | |
| 90%ile | 30510 | 35.2 | 24.2 | . | 12.6 | 7.6 | 294.0 | 6.3 | 8.7 | 16.0 | . | 92 | . | . | |
| 95%ile | 32956 | 42.4 | 27.3 | . | 14.3 | 7.7 | 314.0 | 6.7 | 9.2 | 16.0 | . | 100 | . | . | |
| Period 97-98 | |||||||||||||||
| Statistic | FLOW | NFR | BOD | Grease&Oil | NH4 | pH | Chlorine | Organic N | TP | NO3 | NO2 | COD | Res.Cl | Alkalinity | |
| n | 365 | 52.0 | 52.0 | 3.0 | 51.0 | 46.0 | 51.0 | 50.0 | 51.0 | 51.0 | 0.0 | 52 | 0 | 0 | |
| Mean | 20849 | 23.2 | 20.4 | 3.5 | 6.7 | 7.3 | 226.5 | 4.1 | 7.6 | 7.3 | . | 68 | . | . | |
| Std Dev | 8526 | 8.9 | 6.2 | 3.3 | 4.4 | 0.2 | 35.9 | 2.2 | 1.2 | 4.1 | . | 12 | . | . | |
| Min | 0 | 8.4 | 9.1 | 0.0 | 1.4 | 6.7 | 150.0 | 2.0 | 4.4 | 2.0 | . | 41 | . | . | |
| Max | 49195 | 43.6 | 36.8 | 6.5 | 25.2 | 7.9 | 320.0 | 14.0 | 9.8 | 20.0 | . | 102 | . | . | |
| 10%ile | 9986 | 13.2 | 13.3 | . | 2.5 | 7.0 | 182.0 | 2.7 | 5.9 | 4.0 | . | 50 | . | . | |
| 25%ile | 15597 | 17.6 | 16.0 | . | 3.9 | 7.2 | 202.0 | 2.8 | 6.9 | 4.0 | . | 59 | . | . | |
| 50%ile | 20924 | 22.2 | 19.5 | 4.0 | 6.2 | 7.3 | 230.0 | 3.6 | 7.8 | 6.0 | . | 68 | . | . | |
| 75%ile | 26528 | 27.4 | 23.6 | . | 8.4 | 7.5 | 250.0 | 4.2 | 8.4 | 10.0 | . | 76 | . | . | |
| 80%ile | 27932 | 28.0 | 24.5 | . | 9.0 | 7.5 | 250.0 | 4.2 | 8.5 | 10.0 | . | 78 | . | . | |
| 90%ile | 33156 | 36.4 | 29.9 | . | 12.9 | 7.7 | 274.0 | 5.7 | 8.7 | 12.0 | . | 83 | . | . | |
| 95%ile | 34511 | 42.4 | 33.2 | . | 13.4 | 7.7 | 284.0 | 7.0 | 9.2 | 16.0 | . | 87 | . | . | |