energy company gas price increase{%} electricity price increase
E-top 9.4 7.7

TMF Energy 10.8 10.8

U Power 8.5 9.0

Plus Power 11.1 9.3

Local gas 8.4 10.4
kly 8.2 8.3
The table gives information about six energy companies

Work out the range of the percentage gas price increases.