4000 m peaks of the Alps

What is a summit, what is not ? There are about as many criteria as people climbing those peaks. It becomes especially "important" when it comes to the 4000 m peaks of the Alps - are there 60 or 80 of them?
The main criterion for being a summit is the height by which it is separated from its neighbours. Hundred meters clearly make up a summit, but also 30 m were mentioned as "valid".
Correspondingly, there are different lists of the 4000 m peaks, established by different persons. In the following list I will mention the list by Karl Blodig ("B",[1] - the first person having climbed all 4000 m peaks in the Alps [at least those matching his criteria]), Richard Goedeke ("G",[2]), the "official" list of UIAA ("U",[3]) and my own count ("H", which basically is derived from [1] and [2]).

	Mountain	Height	Diffi- culty	Lists				gap height	Area	Was Hartmut already there?
	Mountain	Height	Diffi- culty	B	G	U	H	gap height	Area	Was Hartmut already there?
1	Aiguille Blanche de Peuterey	4112	E	×	×	×	×	178	Mont Blanc	Fatal error: Uncaught Error: Call to undefined function ereg() in /homepages/29/d13380553/htdocs/4000e.php:256 Stack trace: #0 {main} thrown in /homepages/29/d13380553/htdocs/4000e.php on line 256