condition mean min max 0 h after light 2.636045 2.47554 2.79655 4 h after light 4.350395 3.01199 5.6888 8 h after light 3.4629000000000003 3.38715 3.53865 4 h after dark 7.026445 5.37989 8.673 8 h after dark 7.293245 7.21055 7.37594 12 h after dark 2.83005 2.36701 3.29309