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Table 4 Mean, mean standard error and range of the physicochemical parameters in dry 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 24.8 ± 1.3 7.3 ± 1.8 8.3 ± 0. 3 385 ± 38 248 ± 24 24.6 ± 0.5 314 ± 41
Range 21–28 4.8–12.4 8–9 289–521 189–335 23–26 216–425
C x̄ ± Std. Err 21.2 ± 1.3 5.2 ± 1.1 8.1 ± 0.2 408 ± 43 268 ± 33.7 27.7 ± 1.3 225 ± 22
Range 18–25 4–8.4 8–9 337–558 215–393 23–30 184–300
Fa x̄ ± Std. Err 23.8 ± 1.0 6.8 ± 1.7 8.13 ± 0.2 639.73 ± 114 423.8 ± 83 26 ± 0.7 320 ± 50
Range 21–26 4.2–11.2 8–9 376–1028 249–720 24–28 200–425
Fb x̄ ± Std. Err 23. 5 ± 1.4 6.2 ± 1.4 7.56 ± 0.1 1233.6 ± 107 789.6 ± 68.3 25.8 ± 0.6 463 ± 71.7
Range 19–27 2.6–9.3 7–8 1050–1650 672–1056 24–27 200–625
Ka x̄ ± Std. Err 21.3 ± 0.5 4.4 ± 1.5 8.1 ± 0.16 382.6 ± 39.4 237.8 ± 18.6 24.4 ± 1.8 24 ± 29
Range 20–23 2.5–9.2 7–8 307–543 196–307 19–30 156–325
Kb x̄ ± Std. Err 20.15 ± 0.2 5.5 ± 0.6 7.4 ± 0.1 170.7 ± 14.3 107.7 ± 9 21 ± .7 187 ± 44
Range 20–21 4.0–7.0 7–8 134–204 86–130 19–23 104–275
Ko x̄ ± Std. Err 24.2 ± 1.3 5.4 ± 1.3 7.4 ± 0.8 399 ± 14.4 254 ± 10.5 25.6 ± 1.1 330 ± 38
Range 21–28 2.4–9.0 7–9 362–435 219–278 22–28 200–425
Ma x̄ ± Std. Err 22.2 ± 0.7 4.4 ± 0.6 7.98 ± 0.2 404.1 ± 43 291.9 ± 37.7 27.8 ± 1.8 227.6 ± 26
Range 21–25 3.3–6.5 8–9 333–576 213–403 22–31 160–300
Mb x̄ ± Std. Err 22.9 ± 0.8 7.6 ± 1.6 7.95 ± 0.2 424 ± 625 267 ± 38 21 ± 0.71 263 ± 48
Range 20–24 3.8–10 7–9 203–584 130–365 19.00 100–375