Two main conclusions can be drawn from this…”First throughout the day both C. brevicorne and C. nasutum expose
themselves to lower UVI levels than is available to them nearby in
full sun. Overall, they remain in areas with relatively low levels of UV
radiation. Second, both species receive broadly similar levels of UV-
B radiation and can be categorized within Ferguson Zone 1 (range
UVI 0–0.7), although the daily median UVI levels calculated for C.
nasutum were slightly higher than for C. brevicorne and approach
Ferguson Zone 2 (range UVI 0.7–1.0)”
https://www.researchgate.net/public..._in_two_species_of_chameleons_from_Madagascar
themselves to lower UVI levels than is available to them nearby in
full sun. Overall, they remain in areas with relatively low levels of UV
radiation. Second, both species receive broadly similar levels of UV-
B radiation and can be categorized within Ferguson Zone 1 (range
UVI 0–0.7), although the daily median UVI levels calculated for C.
nasutum were slightly higher than for C. brevicorne and approach
Ferguson Zone 2 (range UVI 0.7–1.0)”
https://www.researchgate.net/public..._in_two_species_of_chameleons_from_Madagascar