condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0379267 0.0 0.0758534 8 h after light 0.076115 0.0 0.15223 4 h after dark 0.1137875 0.0 0.227575 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0