condition mean min max 0 h after light 3.5592300000000003 3.06519 4.05327 4 h after light 3.426895 3.2932 3.56059 8 h after light 6.61533 6.06506 7.1656 4 h after dark 6.09291 6.0446 6.14122 8 h after dark 5.275655 5.07163 5.47968 12 h after dark 4.05516 3.91817 4.19215