condition mean min max 0 h after light 3.20502 3.1074 3.30264 4 h after light 3.44341 3.41408 3.47274 8 h after light 4.8582149999999995 4.72637 4.99006 4 h after dark 4.22459 3.90667 4.54251 8 h after dark 3.2146749999999997 2.97077 3.45858 12 h after dark 2.480705 2.30135 2.66006