Table 4. Percentage Increase in Cluster Formation Potential (J_potential) for Clusters Consisting of Two Different Bases^a.

cluster	% increase
SA–A–MA	806.0
SA–A–DMA	3.8
SA–A–TMA	0.0
SA–A–EDA	20.8
SA–MA–DMA	1.2
SA–MA–TMA	3.0
SA–MA–EDA	4.1
SA–DMA–TMA	58.4
SA–DMA–EDA	2.6
SA–TMA–EDA	28.7

^aThe increase is calculated relative to the sum of the two isolated systems. The base concentrations are taken as the upper limit of the studied ranges (A = 10 ppb, MA = 100 ppt, DMA, TMA, EDA = 10 ppt).