condition mean min max 4 h after light 180.6345 168.216 193.053 8 h after light 148.1305 148.02 148.241 12 h after light 177.346 175.646 179.046 4 h after dark 174.9325 173.309 176.556 8 h after dark 203.34050000000002 200.829 205.852 12 h after dark 210.38799999999998 204.218 216.558