condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0072613 0.0 0.0145226 12 h after light 0.0 0.0 0.0 4 h after dark 0.01632195 0.0155027 0.0171412 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0118305 0.0 0.023661