SiO2 (mg L-1) Month Precipitation C12 C16 C23 C4 C5 C17 F2 F4 P10 P11 P12 P13 P16 P23 P26 P4 P6 P8 P9 Jun/2020 111.2 4.275 1.579 4.479 1.736 8.084 9.777 4.636 7.175 9.244 8.319 4.808 10.701 9.150 4.871 9.839 6.595 8.836 7.332 9.306 Jul/2020 71.6 7.099 2.892 3.319 3.487 11.519 10.452 10.483 5.392 12.099 12.297 6.505 13.364 10.285 6.474 8.288 12.754 13.943 9.904 8.334 Aug/2020 70.4 5.736 3.270 5.978 2.514 9.790 8.171 10.425 9.503 9.699 10.637 4.511 10.622 8.232 9.896 11.636 5.811 10.350 7.657 7.733 Sep/2020 47.8 3.562 2.512 4.248 2.904 NA 7.650 0.161 7.929 9.441 9.301 5.284 15.516 9.889 9.595 9.175 9.623 NA 7.845 7.747 Oct/2020 141.0 4.411 3.066 7.734 2.628 7.296 NA 0.090 6.314 12.735 12.206 17.206 8.384 8.988 4.607 9.245 19.518 11.194 5.967 5.906 Nov/2020 18.0 2.682 2.024 2.113 1.575 NA NA NA 9.757 10.893 10.968 NA 7.842 6.945 7.902 9.487 NA 5.568 5.434 NA Dec/2020 212.0 4.440 2.488 3.873 2.236 9.919 NA 9.510 9.211 10.848 11.006 6.298 15.682 10.707 10.738 9.195 12.360 10.329 7.195 11.132 Jan/2021 81.8 4.581 3.415 4.515 2.151 12.133 NA 2.677 7.618 8.160 12.084 7.897 13.463 10.557 13.020 11.033 15.450 12.806 NA NA Feb/2021 40.2 1.805 1.755 1.391 0.415 10.076 NA 0.515 8.042 13.385 9.481 6.817 17.091 12.078 10.970 10.738 12.012 14.063 NA NA Mar/2021 3.2 1.223 0.961 1.076 1.436 11.236 NA 0.371 10.909 16.989 12.416 8.401 23.888 16.071 15.809 NA 17.153 16.333 NA NA Apr/2021 73.4 5.783 3.014 5.360 3.209 9.400 NA 7.478 11.714 14.679 12.203 5.392 18.688 12.203 12.170 11.095 13.930 11.584 7.967 3.959 May/2021 82.6 5.291 3.329 4.547 3.803 11.244 NA 8.538 11.717 14.930 11.041 4.716 17.839 14.118 7.084 10.973 13.814 14.389 8.064 11.176 NA = Not Available