Explanation of the symbols


phi
Phi represents latitude in radians. E.g. 30° North equals to 0,52359877 and 60° South equals to -1,04719755
lambda
Lambda represents longitude in radians. E.g. 90° East equals to 1,57079632 and 180° West equals to -3,14159265
x
X refers to the value of a point measured on the horizontal axis of a 2 dimensional map
y
Y refers to the value of a point measured on the vertical axis of a 2 dimensional map
beta Beta represents "angular distance" in radians, measured from the Pole. Similar to "latitude", which is measured from the Equator. The value of Beta can not be a negative number.
phi0
Phi 0 represents the latitude of the standard (or normal) parallel line in radians.
beta0 Beta 0 represents the angular distance of the standard parallel in radians, measured from the Pole.
beta1beta2
If there are more than one standard paralles, then they are usually referred to as Beta 1, Beta 2.


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