Meteobridge Nano - missing values in wswin csv export

[lubuwetter]

Hi everybody

since a few month I have a meteobridge Nano for recording the weather data of my Vantage Pro 2 weather station.
Now I want to make a wswin csv export every hour and push the file with ftp to my webserver.
The process is working fine but I have problems with missing data values in the csv File.
Distributed over the whole day I have missing values for all of my sensors and especially the values of the last two records are missing all the time.
The missing values are represented with hyphens. That's a problem for me because on the webserver I want to import the data records in a Postgres Database. And hyphens throw an error when importing them in float attributes.

So my questions are:

1.) Is it possible to have other character then hyphens for missing values? Maybe something like -999 or Null values.
2.) Formerly I had meteohub for recording my weather data. There were never missing values in the exported csv files. What is the reason that I have these missing values with meteobridge? When I make a export with NOAA-monthly-iso I can see that the missing values are recorded two times with the same time one minute earlier (see the example files). For example 1:59 and 3:37 are doubled in NOAA and 2:00 and 3:38 are missing in csv. In meteohub I can see that I have values for 3:36:58 and 3:38:06. So perhaps this is the problem?
3.) Is it possible to run the csv export 5 minutes after the full hour? So the last two missing records wouldn't trouble me for importing the values in the database because I'm always importing the values from :00 to :59 for the last hour.

The missing values a very uncomfortable for me because they need a lot of extrawork for the import in the database.
So any help would be much appreciated

Thx in advance

Michael

[lubuwetter]

No one an idea about this problem?
Main points for me are:
What's the difference between meteohub and meteobridge nano?
And maybe it's possible to run an export 5 minutes after the full hour?

thx in advance

Michael