Compare runs NAM 850mb Streamlines

18z SLP                00 06 12 18 24 30 36 42 48 54 60 66 72 78 84
12z SLP           00 06 12 18 24 30 36 42 48 54 60 66 72 78 84
06z SLP      00 06 12 18 24 30 36 42 48 54 60 66 72 78 84
00z SLP 00 06 12 18 24 30 36 42 48 54 60 66 72 78 84