Number (and percentage) of samples for each concentration level of Gymnodinium breve from the NOAA Coastal Services Center Harmful Algal Bloom Forecasting (HABF) Project.

	1997-98	1998-99	1999-00
Total Number of Samples	363	534	396
Not Present	239 (66%)	286 (54%)	209 (53%)
Present	0 (0%)	0 (0%)	31 (8%)
Very Low	64 (18%)	83 (16%)	44 (11%)
Low	34 (9%)	102 (19%)	63 (16%)
Medium	22 (6%)	50 (9%)	34 (9%)
High	4 (1%)	13 (2%)	15 (4%)