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+NIST/ITL StRD
+Dataset Name:  Roszman1          (Roszman1.dat)
+
+File Format:   ASCII
+               Starting Values   (lines 41 to 44)
+               Certified Values  (lines 41 to 49)
+               Data              (lines 61 to 85)
+
+Procedure:     Nonlinear Least Squares Regression
+
+Description:   These data are the result of a NIST study involving
+               quantum defects in iodine atoms.  The response
+               variable is the number of quantum defects, and the
+               predictor variable is the excited energy state.
+               The argument to the ARCTAN function is in radians.
+
+Reference:     Roszman, L., NIST (19??).
+               Quantum Defects for Sulfur I Atom.
+
+
+
+
+
+
+Data:          1 Response  (y = quantum defect)
+               1 Predictor (x = excited state energy)
+               25 Observations
+               Average Level of Difficulty
+               Observed Data
+
+Model:         Miscellaneous Class
+               4 Parameters (b1 to b4)
+
+               pi = 3.141592653589793238462643383279E0
+               y =  b1 - b2*x - arctan[b3/(x-b4)]/pi  +  e
+
+
+          Starting Values                  Certified Values
+
+        Start 1     Start 2           Parameter     Standard Deviation
+  b1 =      0.1         0.2         1.20196866396E-0  1.9172666023E-02
+  b2 =     -0.00001    -0.000005   -6.1953516256E-06  3.2058931691E-06
+  b3 =   1000        1200           1.2044556708E+03  7.4050983057E+01
+  b4 =   -100        -150          -1.8134269537E+02  4.9573513849E+01
+
+Residual Sum of Squares:                    4.9484847331E-04
+Residual Standard Deviation:                4.8542984060E-03
+Degrees of Freedom:                                 21
+Number of Observations:                             25
+
+
+
+
+
+
+
+
+
+
+Data:   y           x
+       0.252429    -4868.68
+       0.252141    -4868.09
+       0.251809    -4867.41
+       0.297989    -3375.19
+       0.296257    -3373.14
+       0.295319    -3372.03
+       0.339603    -2473.74
+       0.337731    -2472.35
+       0.333820    -2469.45
+       0.389510    -1894.65
+       0.386998    -1893.40
+       0.438864    -1497.24
+       0.434887    -1495.85
+       0.427893    -1493.41
+       0.471568    -1208.68
+       0.461699    -1206.18
+       0.461144    -1206.04
+       0.513532     -997.92
+       0.506641     -996.61
+       0.505062     -996.31
+       0.535648     -834.94
+       0.533726     -834.66
+       0.568064     -710.03
+       0.612886     -530.16
+       0.624169     -464.17