"Attenuation (555nm wavelength) per unit length of the water body by transmissometer and calibration to read zero in clear water"@en . "2016-05-09 14:16:34.0" . "accepted"@en . . "2016-05-09 14:16:34.0" . . "SDN:P01::ATT555AC" . "2" . . . "Unavailable"@en . . "attn_555nm_cwoffset" . . "false" . "SDN:P01::ATT555AC" . "SDN:P01::ATT555AC" . . . "2" .