Lorentzian peak function with bell shape and much wider tails than Gaussian function.
Names: y0, xc, w, A
Meanings: y0 = offset, xc = center, w = FWHM, A = area
Lower Bounds: w > 0.0
Upper Bounds: none
Refer to the curve in Sample Curve section:
Height of the Curve (yc - y0); H = 2 * A / (PI * w)
Origin Basic Functions, Peak Functions, PFW, Spectroscopy, Statistics