condition mean min max 4 h after light 174.5534965 158.572647 190.534346 8 h after light 192.565743 191.30726 193.824226 12 h after light 226.96757499999998 184.69471 269.24044 4 h after dark 256.50405 211.346189 301.661911 8 h after dark 310.48508200000003 245.222146 375.748018 12 h after dark 202.039096 202.039096 202.039096