Model
Proportion of contribution by origin, per beach
Metric
Each bar sums to 100% of that beach's total, split by simulated origin.
Particle frequency by origin, summed across all 24 beaches
Total particle count reaching this beach set, grouped by simulated start country.
Proportion of contribution by state, per beach — United States only
Metric
Same 24 beaches, restricted to particles whose origin resolved inside the United States, split by state.
Particle frequency by state, summed across all 24 beaches — United States only
Total particle count reaching this beach set from a US origin, grouped by state.