Fig. 6From: Assessing plant performance in the EnviratronOutput from the fluorometer probe. Synthetic image (left) shows four sites on the leaf where the fluorometer probe has taken a reading. Table to the right of the central image indicates the coordinates of the probe and the value at three of the sites for YII, an indicator of photosystem II photochemical activity. RGB image to the right is a reference image of the target plantBack to article page