Table 1.

Average phloem sugar concentration (in %wt/wt) determined from the data in table 2 for all species, active loaders and passive loaders. In the species averaged column, the reported concentrations for each species were averaged across studies before taking the total average. In the including repeated species column, the reported concentrations for each species were not averaged before taking the total average.

	species averaged	including repeated species
all species	18.2	18.4
active loaders	21.1	21.8
passive loaders	15.4	14.9