This is source I found from another site, main source you can find in last paragraph
German industrial production rebounded in January, reaffirming the country’s favorable economic outlook after factory orders slumped the most in eight years.
Output, adjusted for seasonal swings and inflation, rose 2.8 percent from December, when it dropped a revised 2.4 percent, the Economy Ministry in Berlin said on Wednesday. The volatile indicator’s reading compares with a median estimate for a 2.7 percent increase in a Bloomberg survey. Production was unchanged from a year earlier.
Source : https://www.bloomberg.com/news/articles/2017-03-08/germany-s-industrial-output-rebounds-led-by-jump-in-investment