Below I give the strength ratios
that is the quotient of strengths, 
as calculated from a 3rd order fit 
of int. strength to current, for the 
up-going currents, and currents 1,10,100A.
For Run 1, the Int strength was 
0.031532      0.22691       2.1993 T
for  1           10          100   A, respectively.
(It uses the MatLab function 'comparestr'  
by Scott Anderson).

Run Base   1 A         10A          100A
------------------------------------------
 1  1    1.           1.           1.
10  1    1.215        1.0148       1.0003
19  1    1.1549       1.0066       0.99962
21  1    1.1668       1.0128       1.0008 
24  1    1.14         1.007        1.0001
27  1    1.0925       1.0069       1.0006
28  1    1.2206       1.0166       1.0007
29  1    1.2655       1.0196       1.001
35  1    1.096        1.0102       1.0006
Changed power supply to same as run 1
36  1    1.0643       1.0071       1.0005
37  1    1.0653       1.0073       1.0005
38  1    1.0652       1.0076       1.0009
39  1    1.0633       1.0074       1.0009

39 38    1.0018       1.0002       1.
39 37    1.0018       0.99994      0.99958

-------------------------------------------
(The output of 
comparestr('strplt.ru1','strplt.r36',3),
Ratio_SL2_SL1 =
       1.0643       1.0071       1.0005
is listed under  run 36 Base 1