how determine the estimated errors for each point in attach file (data) and plot error bar in same figure

L1=[2.5 4.2 6.7 8.5 10 10.4 10.2 10.4 10.3 10.4];

L2=[3 4.4 5.2 6.2 7.1 7.7 11 12.5 12.9 12.7 13 12.9];

L3=[4 5 6.6 8.5 11.4 12 13.7 15 15.4 15.2 15.4];

L4=[4 4.5 5 5.8 8.2 9.5 11.2 13.5 15 17.4 17 17.2 17.3 17.2];

L5=[1.7 2.2 3.4 5.4 6 7.6 9.4 12.3 14.4 16 19.9 19.7 19.5 19.6];

T1=[0.75 1.25 2.25 2.5 3 3.25 3.5 4 5 6];

T2=[1.25 2 2.25 2.5 2.75 3 3.75 4 4.5 5 5.5 6];

T3=[2.5 3 3.5 4 5 5.25 5.5 5.75 6.5 7.5 8];

T4=[3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8.5 9.5 11 11.5];

T5=[3.5 4 5 6.5 7 7.5 8 9 9.5 10 10.5 11.5 12 13];