condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.01907355 0.0164112 0.0217359 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.00434093 0.0 0.00868186 12 h after dark 0.0 0.0 0.0