R help - Nov 2013 - Kriging

Hello,

I have a problem with the kriging function. I get this error:

"Error in solve.default(matrix(A, n + 1, n + 1)) :
  system is computationally singular: reciprocal condition number
5.53457e-17"

But it has worked with other data and now I don't understand why this
error.

Here is a data example and at the end the kriging function.

https://gist.github.com/geo81/b32f98f4784edc4b754d

Thanks for your help.

Greetings,

	[[alternative HTML version deleted]]