condition mean min max 4 h after light 7.367900000000001 6.43444 8.30136 8 h after light 7.36393 6.37257 8.35529 12 h after light 8.90658 8.51056 9.3026 4 h after dark 9.665226666666666 8.88755 10.4613 8 h after dark 7.595816666666667 6.81215 8.51012 12 h after dark 9.21999 7.36399 10.7707