Sugar and acid figures are estimates: syrup carries about 0.9 g of sugar per ml (2:1) or 0.6 g (1:1), and lime juice is taken as about 6% acid, which varies by fruit. Shaking adds roughly a quarter more liquid as melted ice, and the rum is taken as 40% ABV. The glass is a picture, not to scale. The bands are a rule of thumb drawn from the specs in this article, not a standard.