condition mean min max 4 h after light 167.600794 145.693965 189.507623 8 h after light 141.81679200000002 133.863066 149.770518 12 h after light 162.765773 148.997567 176.533979 4 h after dark 196.19364050000001 153.001378 239.385903 8 h after dark 253.05222750000001 236.115137 269.989318 12 h after dark 183.623637 183.623637 183.623637