Update README.md

README.md

@@ -54,7 +54,7 @@ pip install AstroAtmosphere
 ```
 
 
-##Contents of the AstroAtmosphere package
+## Contents of the AstroAtmosphere package
 
 The package contains the following files:
 - `/data/1976USSA.txt` 			: Data file of the 1976 US Standard Atmosphere.
@@ -65,7 +65,7 @@ The package contains the following files:
 - `refractivityModels.py` 		: Contains various functions from literature to calculate the refractive index. Some examples of works included are Ciddor (1996), Barrell & Sears (1939), SLALIB, Owens (1967) and Edlen (1966).
 
 
-##The Ciddor refractivity model
+## The Ciddor refractivity model
 
 The refractivity model from Ciddor, 1996, calculates the index of refraction of air using the following parameters:
 - T - Temperature in Kelvin
@@ -83,7 +83,7 @@ n   = at.n_tph(l=0.55, T=273.15, p=101325, RH=0.2, xc=300)
 Basic functionality of other refractivity models is included as well and is discussed below.
 
 
-##The atmospheric refraction and atmospheric dispersion models
+## The atmospheric refraction and atmospheric dispersion models
 
 If the atmospheric refraction is denoted as R(n), then atmospheric dispersion is defined as R(n1) - R(n2). Thus they are very similar in function and also in use.
 
@@ -122,7 +122,7 @@ atm_ref = ref.cassini(n, zenith=30)
 ```
 
 
-##Analytical error propagation
+## Analytical error propagation
 
 Full analytical error propagation is available for the Ciddor dispersion model (`Observatory.dn_tph()`), for the Cassini refraction model (`refraction.cassiniError()`) and for the Cassini dispersion model (`dispersion.cassiniError()`).
 The results agree well with a Monte Carlo simulation, suggesting that if additional errors have not been considered, they are of neglible importance.
@@ -173,7 +173,7 @@ dispersion_unc = disp.cassiniError(zenith_obs, l1, l2, T, P, H, xc,
     dl1=0.001, dl2=0.001, dT=0.2, dP=30, dRH=0.03, dCO2=25, dz=1/3600) * 3.6e6
 ```
 
-##Other refractivity models
+## Other refractivity models
 
 The package also includes limited functionality of other refractivity models. These are not as extensive, work only under standard atmospheric conditions, or over a limited wavelength range, compared to the Ciddor model.
 
@@ -192,7 +192,7 @@ Included are
 
 The last function extracts the refractive index from the `pyslalib.sla_refro()` function and thus requires [pyslalib](https://pypi.org/project/pySLALIB/). This is an optional dependency for the setup of AstroAtmosphere.
 
-##Quick functions
+## Quick functions
 
 Some functions that assume default conditions for the atmosphere. Then only the wavelength and zenith angle are required to calculate the refraction and dispersion.