condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0120319 0.0 0.0240638 12 h after light 0.0 0.0 0.0 4 h after dark 0.0128439 0.0 0.0256878 8 h after dark 0.01287285 0.0 0.0257457 12 h after dark 0.0126733 0.0 0.0253466