This visualization is part of a study of environmental stress. For each day
the average temperature, wind speed and relative humidity were recorded. Each
of 15 years is shown as a glyph (arrow) with the daily values of the three
parameters. A 30 day trail is shown to provide a monthly context. The color
shows the cloud cover with low cloud cover days having high insolation, The
visual filter tool is shown as a blue ellipsoid. This tool logs the incidence
of high stress (high temperature, high wind, low relative humidity and high
insolation).