condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0330358 0.0 0.0660716 12 h after light 0.0 0.0 0.0 4 h after dark 0.03577515 0.0 0.0715503 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0