sentence: PMMoV was present at higher concentrations ( 10 -10 gc / l ) than PyV ( 10 gc / l ) in coastal water at Miami , Florida ( Symonds et al ., 2016 ) and crAssphage was also present at higher concentrations ( 10 -10 gc / l ) than AdV ( 10 -10 gc / l ) and JCV ( 10 -10 gc / l ) in seawater collected at Conwy , Wales ( Farkas et al ., 2018a ) .