condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.106198 0.0 0.212396 4 h after dark 0.102462 0.0 0.204924 8 h after dark 0.0 0.0 0.0 12 h after dark 0.101917 0.0 0.203834