import xarray as xr
import pandas as pd
import sys

loc = sys.argv[1]
ds = xr.open_mfdataset('{}/{}*.nc'.format(loc, loc))
df = ds.to_dataframe()
df.index = pd.to_datetime(df.index)
df = df[(df.index.month >= 5) & (df.index.month <= 9)]
df.to_csv("pnnl_{}.csv".format(loc))