Table 2.

Mean particle residence times and associated standard errors estimated for SPM samples collected at each river station

	June 2015	September 2015	January 2016	April 2016	August 2016	November 2016	December 2016	Mean value	SD
Residence time (days)
Dourdan	105	72	94	83	140	86	78	94	23
Egly	83	32	111	48	77	55	–	68	28
Yvette	35	32	57	34	51	43	–	42	10
Viry	88	22	49	43	18	26	41	41	22