Results
| Country: | Brasil
| | Station: | Sao Felipe | | River: | Negro | | Area: | 110862 km2 | | Lat: | 0.37 | | Lon: | -67.32 | | Source: | ANEEL | | PointID: | 65 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1978 | | Ending Year: | 1996 | | Total Years: | 19 | | Total Usable Years: | 19 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1978 | 2376 | 2998 | 3423 | 8263 | 10408 | 12135 | 12542 | 8416 | 7498 | 7258 | 5184 | 6222 | 7226.92 |
| 1979 | 2374 | 1543 | 3750 | 7558 | 9629 | 11328 | 10724 | 9170 | 7432 | 7035 | 5673 | 5399 | 6801.25 |
| 1980 | 3392 | 1802 | 1432 | 4798 | 10678 | 12982 | 12726 | 10631 | 8173 | 7806 | 6070 | 4713 | 7100.25 |
| 1981 | 3554 | 3486 | 5423 | 5916 | 9056 | 13205 | 13545 | 9779 | 8222 | 5487 | 3631 | 4036 | 7111.67 |
| 1982 | 4434 | 4268 | 4370 | 7910 | 12475 | 15217 | 12070 | 10762 | 6885 | 4721 | 4471 | 4590 | 7681.08 |
| 1983 | 3463 | 1220 | 2026 | 6119 | 11648 | 10121 | 9838 | 10356 | 9150 | 5622 | 4537 | 4735 | 6569.58 |
| 1984 | 5250 | 6467 | 4929 | 4405 | 7449 | 12800 | 13501 | 12222 | 9127 | 7115 | 6584 | 6021 | 7989.17 |
| 1985 | 6125 | 2288 | 2117 | 2217 | 5740 | 12951 | 12784 | 13044 | 10709 | 7654 | 5393 | 5251 | 7189.42 |
| 1986 | 3085 | 3072 | 5074 | 5389 | 7089 | 11896 | 17000 | 12942 | 6962 | 8120 | 8050 | 7152 | 7985.92 |
| 1987 | 4860 | 4633 | 3668 | 5209 | 10128 | 11592 | 11989 | 10586 | 8416 | 6437 | 4614 | 3763 | 7157.92 |
| 1988 | 3522 | 5440 | 2720 | 3330 | 6784 | 11976 | 14520 | 14745 | 8925 | 6036 | 7700 | 7015 | 7726.08 |
| 1989 | 7265 | 6221 | 6467 | 6250 | 9477 | 15692 | 13799 | 10577 | 7655 | 8613 | 6615 | 3990 | 8551.75 |
| 1990 | 3337 | 6164 | 5142 | 10147 | 13908 | 16681 | 12973 | 8377 | 5810 | 5564 | 4768 | 2813 | 7973.67 |
| 1991 | 3150 | 5817 | 5673 | 5609 | 10552 | 15127 | 13064 | 9422 | 7849 | 4647 | 3723 | 2108 | 7228.42 |
| 1992 | 1260 | 1501 | 4791 | 2696 | 4230 | 6418 | 9845 | 11979 | 7860 | 4500 | 3095 | 6363 | 5378.17 |
| 1993 | 4178 | 3177 | 5823 | 8548 | 11667 | 11901 | 13364 | 9700 | 7651 | 5908 | 8370 | 6680 | 8080.58 |
| 1994 | 3873 | 4241 | 3486 | 6676 | 11532 | 14753 | 12138 | 9614 | 7872 | 5186 | 3750 | 4008 | 7260.75 |
| 1995 | 2884 | 2916 | 3934 | 3350 | 8070 | 12808 | 14571 | 10562 | 7262 | 4608 | 7160 | 6546 | 7055.92 |
| 1996 | 4830 | 6817 | 6890 | 5043 | 10076 | 14186 | 15152 | 12080 | 8713 | 7561 | 6116 | 6249 | 8642.75 |
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| Avg | 3853.26 | 3898.47 | 4270.42 | 5759.63 | 9505.05 | 12830 | 12955 | 10787.6 | 8009 | 6309.37 | 5552.84 | 5139.68 | 7405.86 |
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| Std Dev | 1359.43 |
1793.28 |
1481.98 |
2048.94 |
2376.75 |
2234.9 |
1698.12 |
1628.41 |
1028.07 |
1276.27 |
1527.82 |
1407.49 |
730.8 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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