Fig. 2: Leachate concentration by cookware material.
From: Evaluating metal cookware as a source of lead exposure

Concentrations 15 min after simmering (15 min) are in white, whereas concentrations 24 h after sitting at room temperature (24 h) are in gray. The median concentration is depicted by the middle line; the lower and upper interquartile concentrations are depicted by the box, and the minimum and maximum concentrations are depicted by the lower and upper whiskers.