condition mean min max 4 h after light 646.965692 552.930096 741.001288 8 h after light 1000.0375345 885.693595 1114.381474 12 h after light 961.920651 841.01972 1082.821582 4 h after dark 804.0042794999999 695.737284 912.271275 8 h after dark 547.1235154999999 531.001288 563.245743 12 h after dark 1283.618767 1283.618767 1283.618767