如何使石斑鱼和轴长一致?

For my assignment I'm supposed to plot the tracks of 20 hurricanes on a map using matplotlib. However when I run my code I get the error: "AssertionError:Grouper and axis must be the same length". I'm a newb to python and matplotlib, so could someone please point me in the right direction of what I need to change. Thanks in advanceFor my assignment I'm supposed to plot the trac