condition mean min max 4 h after light 513.157541 454.369089 571.945993 8 h after light 488.8309285 479.693541 497.968316 12 h after light 511.94123349999995 493.686671 530.195796 4 h after dark 686.802012 557.869687 815.734337 8 h after dark 790.25094 686.688799 893.813081 12 h after dark 595.686632 595.686632 595.686632