condition mean min max 0 h after light 4.146305 4.10419 4.18842 2 h after light 2.31699 2.21022 2.42376 4 h after light 1.69332 1.65108 1.73556 8 h after light 3.28831 2.91553 3.66109 12 h after light 5.036035 4.57478 5.49729 2 h after dark 5.996285 5.7889 6.20367 4 h after dark 6.690165 6.61244 6.76789 8 h after dark 7.049035 6.97353 7.12454 12 h after dark 5.048715 4.83684 5.26059