condition mean min max 4 h after light 185.530249 161.925944 209.134554 8 h after light 228.818501 173.562616 284.074386 12 h after light 184.263228 173.562616 194.96384 4 h after dark 192.5167775 171.460967 213.572588 8 h after dark 167.3798545 164.248114 170.511595 12 h after dark 142.616672 142.616672 142.616672