aがx^1の定数
bがx^0の定数
cがx^2の定数です。
見てのとおりエラーがかなりやばめです

d beam
p
#a               = 0.0043156        +/- 3.097e-06    (0.07177%)
#b               = -0.0517649       +/- 0.009539     (18.43%)

d
#a               = 0.00421703       +/- 2.331e-05    (0.5527%)
#b               = 0.115316         +/- 0.04371      (37.9%)

a
#a               = 0.00431893       +/- 9.218e-06    (0.2134%)
#b               = -0.223807        +/- 0.02781      (12.42%)


3He beam 2nd(run0300以上)
alpha
#a               = 0.00779387       +/- 1.928e-05    (0.2474%)
#b               = -0.652508        +/- 0.0333       (5.103%)

d
#a               = 0.00776914       +/- 2.499e-05    (0.3217%)
#b               = -0.473585        +/- 0.0453       (9.566%)

3He beam 1st(run0300以下)
alpha
#a               = 0.00745331       +/- 8.813e-05    (1.182%)
#b               = 0.0383298        +/- 0.1445       (376.9%)

d
#a               = 0.00798614       +/- 4.608e-05    (0.577%)
#b               = -0.615521        +/- 0.08458      (13.74%)