Map (left panel) showing the color mosaic of locations within the analyzed area with the Lyα integrated intensities belonging to the three peaks in the E histogram (right panel). Integrated intensities outside of the analyzed area are shown in shades of gray. The histogram constructed for all Lyα profiles is used (shown also in the upper left panel of Fig. A.1). Color coding in the mosaic corresponds to that used in the histogram: The red is for the left histogram peak, green for the middle, and blue for the right peak of the E histogram.