Fig. 2

The sensitivity of investment performance to each input investment indicator from 2013 to 2015. a The sensitivity of investment performance of all provincial companies to each input investment indicator from 2013 to 2015. Black line with square indicates the sensitivity of investment performance to the investment in wireless access network. Red line with circle indicates the sensitivity of investment performance to the investment in transmission network. Blue line with up-triangle indicates the sensitivity of investment performance to the investment in service network. Purple line with down-triangle indicates the sensitivity of investment performance to the investment in supporting network. Green line with diamond indicates the sensitivity of investment performance to the investment in construction. b The sensitivity of investment performance of groups A and B to the investment in wireless access network from 2013 to 2015. Red line with up-triangle indicates the sensitivity of investment performance of group A to the investment in wireless access network. Black line with square indicates the sensitivity of investment performance of group B to the investment in wireless access network. c The sensitivity of investment performance of groups A and B to the investment in transmission network from 2013 to 2015. Red line with up-triangle indicates the sensitivity of investment performance of group A to the investment in transmission network. Black line with square indicates the sensitivity of investment performance of group B to the investment in transmission network. d The sensitivity of investment performance of groups A and B to the investment in service network from 2013 to 2015. Red line with up-triangle indicates the sensitivity of investment performance of group A to the investment in service network. Black line with square indicates the sensitivity of investment performance of group B to the investment in service network. e The sensitivity of investment performance of groups A and B to the investment in supporting network from 2013 to 2015. Red line with up-triangle indicates the sensitivity of investment performance of group A to the investment in supporting network. Black line with square indicates the sensitivity of investment performance of group B to the investment in supporting network. f The sensitivity of investment performance of groups A and B to the investment in construction from 2013 to 2015. Red line with up-triangle indicates the sensitivity of investment performance of group A to the investment in construction. Black line with square indicates the sensitivity of investment performance of group B to the investment in construction