condition mean min max 0 h after light 56.23805 55.0801 57.396 4 h after light 110.152 103.047 117.257 8 h after light 79.6106 77.7621 81.4591 4 h after dark 191.9315 169.222 214.641 8 h after dark 174.7665 167.859 181.674 12 h after dark 96.06215 73.1873 118.937