condition mean min max 4 h after light 668.3990309999999 654.142928 682.655134 8 h after light 637.7751055 599.46263 676.087581 12 h after light 519.1256375 442.634603 595.616672 4 h after dark 494.8953555 468.118014 521.672697 8 h after dark 562.146115 499.975691 624.316539 12 h after dark 604.30898 604.30898 604.30898