condition mean min max 4 h after light 6962.057182500001 6906.544984 7017.569381 8 h after light 6774.3745555000005 6428.389149 7120.359962 12 h after light 6889.114172 6253.607948 7524.620396 4 h after dark 6886.974212 5995.063139 7778.885285 8 h after dark 4165.534149499999 3012.869906 5318.198393 12 h after dark 5942.498252 5942.498252 5942.498252