How to create a histogram from a given frequency table

I wanted to draw a histogram as in the photo above, I typed the command:

Histogram[{{11.945, 11.96, 11.975, 11.99, 12.005, 12.02, 12.035}, {3, 9, 13, 21, 9, 4, 1}}]

I got completely wrong chart. What should I do to correct that ?