updated readme ts figure

README.md

@@ -2,7 +2,7 @@
 
 AdePy contains analytical solutions for the advection-dispersion equation (ADE) describing solute transport in groundwater, written in Python. 
 
-Currently, all solutions shown in [Wexler (1992)](https://doi.org/10.3133/twri03B7) are provided as separate Python functions. These simulate 1D, 2D or 3D solute transport in uniform background flow for a variety of boundary conditions and source geometries. The solute may be subjected to linear sorption and first-order decay. 
+Currently, all solutions shown in [Wexler (1992)](https://doi.org/10.3133/twri03B7) are provided as separate Python functions. These simulate 1D, 2D or 3D solute transport in uniform background flow for a variety of boundary conditions and source geometries. The solute may be subjected to linear equilibrium sorption and first-order decay. 
 
 Since all equations are linear, superposition in time and space can be applied to create complex source geometries with time-varying source concentrations. Gauss-Legendre quadrature is used to solve the integrals which require numerical integration. Sequential or parallel first-order parent-daughter chain reactions are supported using the method described by [Sun & Clement (1999)](https://doi.org/10.1023/A:1006507514019).
 
@@ -78,7 +78,7 @@ plt.grid()
 
 ```python
 # Calculate and plot the concentration time series for 5 years at a location downstream ----
-obs = (10, 0, 0)  # x-y-z coordinates of observation point, m
+obs = (40, 0, 0)  # x-y-z coordinates of observation point, m
 t = np.linspace(1, 5 * 365, 100)  # output times, d
 cobs = point3(c0, obs[0], obs[1], obs[2], t, v, n, al, ah, av, Q, xc, yc, zc)
 
@@ -92,4 +92,4 @@ plt.ylabel('Concentration (mg/L)')
 ## References
 [Wexler, E.J., 1992. *Analytical solutions for one-, two-, and three-dimensional solute transport in ground-water systems with uniform flow*, USGS Techniques of Water-Resources Investigations 03-B7, 190 pp., https://doi.org/10.3133/twri03B7](https://doi.org/10.3133/twri03B7)
 
-[Sun, Y., Clement, T.P., 1999. *A Decomposition Method for Solving Coupled Multi–Species Reactive Transport Problems*, Transport in Porous Media 37, pp. 327–346, https://doi.org/10.1023/A:1006507514019](https://doi.org/10.1023/A:1006507514019)
+[Sun, Y., Clement, T.P., 1999. *A Decomposition Method for Solving Coupled Multi–Species Reactive Transport Problems*, Transport in Porous Media 37, p. 327–346, https://doi.org/10.1023/A:1006507514019](https://doi.org/10.1023/A:1006507514019)