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Table 1

Descriptive statistics

Data statistic	Station
Data statistic	D.I.A		Kisarawe Agr.		Minaki Sec.		Ubungo Maji
Scenario	Past	Future	Past	Future	Past	Future	Past	Future
Mean	12.77	14.11	14.50	18.25	13.04	14.43	12.93	14.93
Median	6.70	6.98	8.00	9.02	7.60	7.43	7.50	8.27
Variance	253.03	332.53	321.79	568.51	216.70	330.55	227.79	332.54
Std. dev.	15.91	18.24	17.94	23.84	14.72	18.18	15.09	18.24
CV	1.25	1.29	1.24	1.31	1.13	1.26	1.17	1.22
Skewness	2.86	2.82	2.99	2.86	2.59	2.75	2.72	2.80
P25	2.90	2.90	3.50	4.06	3.70	3.44	3.10	3.29
P75	16.20	17.39	18.00	22.52	17.00	17.82	16.60	18.96
P90	32.10	35.48	35.60	46.01	31.51	36.19	30.70	35.63
P95	44.59	52.04	50.00	67.56	42.87	51.94	42.50	50.99
Max.	156.40	165.85	175.00	191.42	129.00	141.09	125.30	150.01
Upper outlier fence	36.15	39.13	39.75	50.21	36.95	39.39	36.85	42.47

Data statistic	Station
Data statistic	D.I.A		Kisarawe Agr.		Minaki Sec.		Ubungo Maji
Scenario	Past	Future	Past	Future	Past	Future	Past	Future
Mean	12.77	14.11	14.50	18.25	13.04	14.43	12.93	14.93
Median	6.70	6.98	8.00	9.02	7.60	7.43	7.50	8.27
Variance	253.03	332.53	321.79	568.51	216.70	330.55	227.79	332.54
Std. dev.	15.91	18.24	17.94	23.84	14.72	18.18	15.09	18.24
CV	1.25	1.29	1.24	1.31	1.13	1.26	1.17	1.22
Skewness	2.86	2.82	2.99	2.86	2.59	2.75	2.72	2.80
P25	2.90	2.90	3.50	4.06	3.70	3.44	3.10	3.29
P75	16.20	17.39	18.00	22.52	17.00	17.82	16.60	18.96
P90	32.10	35.48	35.60	46.01	31.51	36.19	30.70	35.63
P95	44.59	52.04	50.00	67.56	42.87	51.94	42.50	50.99
Max.	156.40	165.85	175.00	191.42	129.00	141.09	125.30	150.01
Upper outlier fence	36.15	39.13	39.75	50.21	36.95	39.39	36.85	42.47

CV, coefficient of variation; P, percentile.