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[3,105240816627634
3,842272217109386
2,144382787294432
2,955908335236294
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0,313229622700572
0,390606916543935
0,510084467937848
];
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c1 =

     General model:
       c1(x) = sqrt((x-a)^2+r^2)+b
     Coefficients (with 95% confidence bounds):
       a =        3.04  (1.228, 4.851)
       b =  2.134e-010  (fixed at bound)
       r =      0.2988  (-1.422, 2.019)
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3,842272217109386
2,144382787294432
2,955908335236294
];
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