Serving order / multi-column label
Some labels declare different amounts for different serving sizes in separate columns (e.g. "per 2 tablets, ages 4-8" and "per 4 tablets, ages 9+"). Every dose figure on this site uses only the label's first serving column, so a nutrient isn't double-counted by summing across age-specific columns that describe the same product.
Example
This convention is why every per-product dose total on this site, from compound pages to the dose-percentile tool, reads the same regardless of how many serving columns a label happens to declare.