condition mean min max 4 h after light 154.992723 135.348399 174.637047 8 h after light 258.061464 211.881058 304.24187 12 h after light 200.539331 123.770518 277.308144 4 h after dark 188.947926 186.155134 191.740718 8 h after dark 166.746876 150.847441 182.646311 12 h after dark 78.386894 78.386894 78.386894