Did they compare regions with different cut-off dates? For example, in NY it’s in December, and in MA it’s in September. Actually looks like it’s 12⁄1 in NYC and 12⁄31 on Long Island, too. Those would help distinguish age vs sunlight or other seasonal effects on development.
Did they compare regions with different cut-off dates? For example, in NY it’s in December, and in MA it’s in September. Actually looks like it’s 12⁄1 in NYC and 12⁄31 on Long Island, too. Those would help distinguish age vs sunlight or other seasonal effects on development.
Yes this effect is consistent across different countries with different cut off dates.