I have to create a chart that has three columns that I would like to show as
two bars,the columns are one with a fixed amount and the other two with a
negative to positive range. Do you know how this could be done?

Ive included a sample of the data, the first numeric column would be the
first set of bars (2.5, 8.9, etc.) and the second two columns would be the
range set of bars (-5.3 to 10.3, etc.)
   
Sample 1     2.5    -5.3    10.3
Sample 2     8.9    -2.5    20.3
Sample 3     3.8    -7.4    14.9
Sample 4     0.0    -7.1    7.1

Any help would be greatly appreciated! Thanks!!!!