problem with format for writing Water Level

[chstefanakos]

There is a problem writing the values of water level, when these are NaN.
So, in version 1, I changed in file "\dnora\dnora\wlv\write.py", line 78:
from
[ct, :, :]*1000, fmt='%i')
to
[ct, :, :]*1000, fmt='%4.0f')

I don't know how/where it is in ver.2. So, it's up to you to change it there (ver.2).