condition mean min max 0 h after light 3.222415 3.15378 3.29105 4 h after light 2.043585 1.90022 2.18695 8 h after light 2.3281150000000004 2.22942 2.42681 4 h after dark 2.91029 2.53816 3.28242 8 h after dark 2.122585 2.08817 2.157 12 h after dark 2.42249 2.4059 2.43908