WebSMURF: Observation Results

Observed data: Ammonia for river section 'Saltley Viaduct to confluence with River Tame'

Graph of Ammonia - data tabulated below

The graph shows how ammonia data for this river section has changed over time.

Date of observation	centile10 (mgN/l)	centile50 (mgN/l)	centile90 (mgN/l)	count	max (mgN/l)	mean (mgN/l)	min (mgN/l)
10/1989	0.23	0.38	0.47	12	0.51	0.35	0.19
10/1990	0.14	0.25	0.44	25	0.54	0.28	0.04
10/1991	0.05	0.27	0.81	31	1.07	0.40	0.04
10/1992	0.04	0.28	0.49	24	0.81	0.27	0.04
10/1993	0.19	0.32	0.60	19	0.74	0.39	0.15
10/1994	0.16	0.28	0.44	20	1.32	0.34	0.03
10/1995	0.38	0.46	0.77	11	0.83	0.50	0.25
10/1996	0.27	0.35	0.76	13	1.24	0.48	0.17
10/1997	0.17	0.33	0.66	11	2.28	0.51	0.16
10/1998	0.23	0.33	0.43	11	0.45	0.34	0.18
10/1999	0.27	0.34	0.45	13	0.48	0.34	0.16
10/2000	0.32	0.50	1.00	10	1.25	0.62	0.28
10/2001	0.28	0.44	0.63	13	0.74	0.47	0.20
10/2002	0.20	0.47	0.75	2	0.82	0.47	0.13

The table shows how ammonia data for this river section has changed over time.