How do you solve for column I?

H I J RM -RF A B C D Names Ticker 1 Date PERMNO Date Symbol Jan-16 89475 20160129 SNY Feb-16 89475 20160229 SNY Mar-16 89475 20160331 SNY Apr-16 89475 20160429 SNY May-16 89475 20160531 SNY Jun-16 89475 20160630 SNY E Return on the S&P 500 Returns Index -0.023681 -0.050735 -0.050192 -0.004128 0.015424 0.065991 0.023406 0.002699 0.042099 0.015329 0.015777 0.000906 G Risk-Free Rate 0.0023 0.0026 0.0025 0.0019 0.0023 0.0022 R-R: 0.0767 0.0569 -0.0789 -0.0242 -0.0551 -0.0145 UI