A logarithmic scale is a nonlinear scale, typically used to display a large range of positive multiples of some quantity, ranging through several orders of magnitude, so that the value at higher end of the range is many times the value at the lower end of the range.Common uses include earthquake strength, sound loudness, light intensity, and pH of solutions. A regular graph has numbers spaced at even intervals, while a log scale graph has numbers spaced at uneven intervals. The reason for this is that while a regular graph uses regular counting numbers like 1,2,3,4, and 5, a logarithmic graph uses powers of 10, such as 10, 100, 1000 and 10,000. Check 'Logarithmic scale' check box and set 'Base' to 10. See how this time will look like your chart. Take a look at the scale of Axis. When using a logarithmic scale is easy to read chart. Clearly you see all the bars, although significantly different from each other numerical values.