Export production of particles

Original values come from: Table 3 Total flux and fluxes of biogeochemical constituents. Units used for total flux are mg m**-2 day**-1; for C org, C inorg, N org and Biog. Si flux, µmole m**-2 day**-1; for Al flux, µg m**-2 day**-1. Preservative is formalin unless otherwise noted.Units were changed for consistency with the database using C=12.01078 g/mol, N=14.00674 g/mol, BSi=SiO2=67.29052 g/mol.