* The first article reported that Martin was paranoid because of his addiction to Purple Drank, an intoxicating concoction of codeine, juice and candy.
* The second article reported that Martin's addiction made him paranoid and belligerent.
This here is my fourth and final article in this series. Soon I will resume writing about the Ferguson incident.
Civil twilight is defined when the sun is 6 degrees below the horizon. .... in the evening it is called dusk.
This is the limit at which twilight illumination is sufficient, under good weather conditions, for terrestrial objects to be clearly distinguished .... the horizon is clearly defined and the brightest stars are visible under good atmospheric conditions in the absence of moonlight or other illumination.
.... in the evening after the end of civil twilight, artificial illumination is normally required to carry on ordinary outdoor activities.
Nautical twilight is defined when the sun is 12 degrees below the horizon.
At the ... end of nautical twilight, under good atmospheric conditions and in the absence of other illumination, general outlines of ground objects may be distinguishable, but detailed outdoor operations are not possible, and the horizon is indistinct.