condition mean min max 4 h after light 4203.293607 3469.982532 4936.604682 8 h after light 4472.6018485 4119.142253 4826.061444 12 h after light 4582.350032 4521.15561 4643.544454 4 h after dark 3920.112945 3088.939716 4751.286174 8 h after dark 3682.6733885 3277.874661 4087.472116 12 h after dark 4573.41959 4573.41959 4573.41959