Apologies for the confusion my first attempt to explain the problem caused and not being clear enough about the number of blocks LanX. The blocks are 61 because in the real file there are 61 solvents instead of the truncated solvent list I have provided just to safe space. Very big thank you for providing help on this and also an inspiration for one of the solutions provided by tybalt89.

In reply to Re^2: Help with parsing a file (hash keys are unique) by Odar
in thread Help with parsing a file by Odar

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