condition mean min max 4 h after light 537.5228 520.8261 567.7742 8 h after light 367.8380333333333 273.7186 487.1115 12 h after light 658.9908 595.9242 731.7712 16 h after light 1793.138 1697.86 1847.25 4 h after dark 1272.307 1137.155 1360.432 8 h after dark 722.2994666666666 517.0957 939.5214