Figure 6. The spectral dependence of measured downwelling irradiance on the water surface on a moonless night (the night of August 12^th, 2015) at 22:00 local time at a highly illuminated station (station i4; long dashed line) and at a low illuminated station (station i19; short dashed line), and on a full moon night (the night of September 9^th, 2014) at 23:00 local time at the low illuminated station (station i19; solid line).

Stations i4 and i19 are located 150 m and 200 m, from the coastline, respectively.