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Table 5 Mean, mean standard error and range of the physicochemical parameters in wet season season (Temp for temperature in oC; DO for dissolved oxygen in mg L−1; pH for H+ concentration; EC for electrical conductivity in μS cm−1; TDS for total dissolved solids in mg L−1; SD for secchi depth in cm; TA for total alkalinity, mg L−1; Turbidity in NTU)

From: Assessment of spatio-temporal variations of selected water quality parameters of Lake Ziway, Ethiopia using multivariate techniques

Site Temp DO pH EC TDS SD TA
B x̄ ± Std. Err 22 ± 0.5 4.72 ± 0.4 8.59 ± 0.1 274.5 ± 9 175.7 ± 58.2 15.3 ± 0.3 207 ± 6.3
Range 21.5–23 4.27–5.4 8.4—8.7 176—456 113–292 15–16 200–220
C x̄ ± Std. Err 21.2 ± 0.3 4.75 ± 28 8.57 ± 0.1 218 ± 44 147.8 ± 37 17.3 ± 0.7 168 ± 6.1
Range 20.7–22 4.4–5.3 8.4–8.7 173–306 110–222 16–18 160–180
Fa x̄ ± Std. Err 22 ± 0.6 4.4 ± 0.3 8.78 ± 0.5 353 ± 89 226 ± 56 18.6 ± 0.7 172 ± 14
Range 20.8–23 3.95–4.8 7.9–9.7 187–488 120–312 18–20 148- 196
Fb x̄ ± Std. Err 21 ± 1.6 6.2 ± 0.7 8.53 ± 0.1 370 ± 98 216 ± 84 19.6 ± 0.7 250 ± 111
Range 18–24 4.9–7.2 8.3–8.7 175–478 49–306 19–21 120–472
Ka x̄ ± Std. Err 22 ± 0.3 3.1 ± 0.3 8.4 ± 0.1 230 ± 41.4 180 ± 32 16–1.2 117–35
Range 20—27 2.4 -3.5 8.3–8.5 183–312 117–221 14–18 80–188
Kb x̄ ± Std. Err 20 ± 0.2 2.6 ± 0.6 7.78 ± 0.2 101 ± 17.9 65 ± 11.7 17.3 ± 0.9 72.3 ± .3
Range 20–21 1.4–3.6 7.5–8.3 65–120 42–78.3 16–19 72–73
Ko x̄ ± Std. Err 22.5 ± 0.9 4.8 ± 0.3 8.7 ± 0.1 381 ± 101 234 ± 61 18.3 ± 0.9 175 ± 14.6
Range 21–24 4.35–5.3 8.5–8.8 179–496 116–318 17.-20 146–190
Ma x̄ ± Std. Err 23 ± 0.1 3.9 ± 0.1 8.6 ± 0.1 273 ± 49 153 ± 21.3 17 ± 1.2 130 ± 24.9
Range 22–23 3.7–4.1 8.6–8.61 176–337 113–185 15–19 100–180
Mb x̄ ± Std. Err 20.4 ± 0.7 4.8 ± 0.8 7.4 ± 0.5 120 ± 3 77 ± 1.9 18 ± 1.7 100 ± 20
Range 19.5–22 3.4–5.8 6.5–8.3 115–126 73.7–80.4 15–21.0 60–120