condition mean min max 4 h after light 517.671977 345.039874 690.30408 8 h after light 556.7064935000001 536.199277 577.21371 12 h after light 487.3850985 364.572663 610.197534 4 h after dark 239.2137315 133.426175 345.001288 8 h after dark 156.352967 92.84269 219.863244 12 h after dark 172.332743 172.332743 172.332743