condition mean min max 4 h after light 184.013482 90.924428 277.102536 8 h after light 234.082542 215.847441 252.317643 12 h after light 187.6441485 107.946153 267.342144 4 h after dark 97.7999595 57.906324 137.693595 8 h after dark 55.68941649999999 44.828134 66.550699 12 h after dark 30.499372 30.499372 30.499372