Updates for new variables and full LLC4320 dataset

[ThomasHaine]

Adds U, V, W, KPPhbl, and new depth levels and timesteps for full ceph LLC4320 dataset

[codecov-commenter]

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Additional details and impacted files

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  Coverage          ?   93.26%           
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  Files             ?        3           
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  Hits              ?      277           
  Misses            ?       20           
  Partials          ?        0           

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