condition mean min max 4 h after light 12.0183955 10.597598 13.439193 8 h after light 13.439193 13.439193 13.439193 12 h after light 15.229059 10.911474 19.546644 4 h after dark 13.971970500000001 13.330097 14.613844 8 h after dark 16.520416 12.107224 20.933608 12 h after dark 11.954527 11.954527 11.954527