Rerun NDBC notebooks

Author: jmcvey3

examples/directional_waves.ipynb

@@ -218,7 +218,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "We will ask for the data for 2021. To do this we use the `wave.io.ndbc.request_directional_data` function. We see that the spectrum is calculated over ~1hour which results in 8572 different timestamps. We also see there are 47 frequency bins."
+    "We will ask for the data for 2021. To do this we use the `wave.io.ndbc.request_directional_data` function. We see that the spectrum is calculated over ~1 hour which results in 8572 different timestamps. We also see there are 47 frequency bins."
    ]
   },
   {