Number of bikes in active use does not seem to change with the seasons: <a href="https:&#x2F;&#x2F;github.com&#x2F;toddwschneider&#x2F;nyc-citibike-data&#x2F;blob&#x2F;master&#x2F;analysis&#x2F;graphs&#x2F;bikes_used.png" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;toddwschneider&#x2F;nyc-citibike-data&#x2F;blob&#x2F;mas...</a><p>The summer 2015 increase corresponds to the permanent expansion in August 2015; I&#x27;m not sure why there was a dip in Q1 2015