Return is on left axis, measured from start of cycle, so each builds where previous left off. (mutualfundobserver.com)
Thus a decline in solar energy will have an immediate effect if it occurs at a time when the overall balance of all the oceanic oscillations is negative as now (2007 to date) when the end of solar cycle 23 is significantly delayed and the late start of cycle 24 suggests a weaker cycle than we have had for some time. (newclimatemodel.com)
But as they get closer to the four - month mark the stages within each sleep cycle shifts and now your baby has a larger window of light sleep at the start of each cycle. (huffingtonpost.ca)