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Table 3 Monthly variation of light availability parameters in Sundarban estuary
| Month | Suspended Particulate Matter (mg/L) | Turbidity (NTU) | Secchi Disc Index (cm) | Light Attenuation Coefficients |
|---|---|---|---|---|
| November | 172.1± 5.6 | 55±5.0 | 52.2±2.2 | 0.030 |
| December | 144.5± 4.2 | 48±5.5 | 61.5±2.1 | 0.025 |
| January | 129.4± 3.6 | 39±4.8 | 70.0±2.6 | 0.022 |
| February | 117.3± 4.6 | 25±5.3 | 78.0±1.8 | 0.020 |
| March | 87.8± 5.4 | 25±0.6 | 137.5±3.9 | 0.011 |
| April | 95.8± 5.6 | 24±0.4 | 169.6±4.2 | 0.009 |
| May | 73.4± 3.2 | 23±0.4 | 174.1±4.5 | 0.009 |
| June | 57.5± 6.2 | 20±0.8 | 185.3±5.6 | 0.008 |
| July | 186.5± 6.9 | 57±4.8 | 51.2±2.2 | 0.030 |
| August | 230.8± 2.7 | 110±3.2 | 24.5±1.1 | 0.060 |
| September | 234.2± 5.9 | 114±2.5 | 22.6±1.2 | 0.069 |
| October | 248.4± 6.9 | 125±6.2 | 20.0±1.1 | 0.078 |
