Raw C-Star counts in N. Atlantic seawater are reading *higher* than those observed in pure fresh water (0.2 um filtered Milli-Q) at U.W. lab just before deployment.

For example, in water below 100 m, C-Star 1063 on float 48 is reading counts > 3971, which is the "reference" value found using Milli-Q and used in the current beam-c calculation. High counts greater than the U.W. reference value (3924) are also found for C-Star 1062 on float 47 in 150+ m water.

So, since transmissivity has actually increased on both C-Stars, it is quite possible that this is clearer water than we were able to produce in the lab. Another explanation may be temperature effects. The UW recalibration was done in 22 deg C water; N. Atl. temperatures are approx. 9.5 deg C.