condition mean min max 0 h after light 1.08497 0.0 2.16994 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 2.23247 0.0 4.46494 12 h after light 0.0 0.0 0.0 2 h after dark 2.23399 0.0 4.46798 4 h after dark 1.08224 0.0 2.16448 8 h after dark 1.176845 0.0 2.35369 12 h after dark 0.0 0.0 0.0