(a)
(b)
(c)
(d)
(e)
(f)
Figure 5: Effect of exposure temperature of 13, 23, and 33°C: (a) 1.8-180-13, (b) 1.8-200-13, (c) 2.4-230-13, (d) 3.7-200-13, (e) 3.7-230-13, and (f) 3.7-250-13.