condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.04891525 0.0 0.0978305 8 h after light 0.150089 0.098168 0.20201 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0977245 0.0 0.195449 12 h after dark 0.0 0.0 0.0