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Table 2 Distribution of levels of physicochemical parameter percentiles when compared to standard categories

From: Effect of physicochemical parameters on Anopheles and Culex mosquito larvae abundance in different breeding sites in a rural setting of Muheza, Tanzania

Parameter Percentile Range (min-max) Standard range [29] Description [29]
Salinity (ppm) ≤ 33% 107.0–245.0 < 500 Fresh water
≥ 67% 576.9–1190.0 ≥ 500 Polluted water
Temperature (°C) ≤ 33% 24.5–30.4 < 35 Normal temperature
≥ 67% 36.6–42.8 ≥ 35 Hot
Total dissolved solids (ppm) ≤ 33% 131.0–289.0 < 400 Mineral springs
≥ 67% 701.0–1450.0 ≥ 400 High contamination
Conductivity (μS) ≤ 33% 200.0–411.0 < 800 Domestic water
≥ 67% 1007.0–1970.0 ≥ 800 Highly polluted
pH ≤ 33% 7.0–7.9 7 Neutral
≥ 67% 8.4–11.0 11 Weak basic