Fig. 3 (IMAGE) Science China Press Caption Time series of the CA (a), SA (b), EA (c) annual δ18Op and the corresponding insolation in different months, as well as the phase relationships between the δ18Op minima (d) and climate forcing factors (e) in the precession band for the past 300,000 years. Credit ©Science China Press Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.