condition mean min max 4 h after light 6.83427 6.101 7.56754 8 h after light 4.413665 3.07931 5.74802 12 h after light 3.3476299999999997 2.48317 4.21209 4 h after dark 5.972804999999999 5.80967 6.13594 8 h after dark 3.981115 3.65738 4.30485 12 h after dark 5.374165 5.09751 5.65082