Toxicity is reported for the specified species of shellfish in units of micrograms/100g of shellfish, inferred from mouse bioassays. Three mice are tested, and the median mouse is reported, so if only one mouse dies, it is reported as no detect. No detects are designated by a score of -40.
Mussel bags were hung on the Casco Bay Moorings M1, M2 and M3. Long term bags were hung in addition to bags that were replaced every week (or as the cruise schedule permitted). Bags with numbers following the name are the long-term bags hung on April 7.