Puts the mean, "global" light intensity at the dive spot into brackets. Allowed keywords are: undetermined, sunny, half-shadow, shadow, no-light (e.g. in a cave). Contrary to <lightintensity>, <globallightintensity> has no attribute to set the exact, measured light intensity in Lux.
(see also <sitedata>)
<!-- sunny dive spot (shallow water), no shadows --> <globallightintensity>sunny</globallightintensity>