condition mean min max 4 h after light 1.9880200000000001 1.73682 2.23922 8 h after light 2.406105 2.38127 2.43094 12 h after light 2.564285 2.43735 2.69122 4 h after dark 2.90281 2.76431 3.00852 8 h after dark 1.9589766666666666 1.81307 2.1025 12 h after dark 1.9641666666666666 1.65243 2.25399