There is a second table for the listing of individuals who are DF29+, but nevertheless negative for SNPs considered phyloequivalent to M253.

The vast majority of those who are M253+ either are or are deduced to be DF29+.  We have only two groups within M253+ who either are or are deduced to be DF29-.  These two groups are M253* and Z131+.  Of the over 2600 members of the Hg I1 Project who have been SNP tested to at least some level, there are only 18 such individuals, and only seven of those have tested negative for both DF29 and Z131.

Currently, there are dozens of SNPs that are classified as phyloequivalent to M253.  While it's a fair assumption that everyone who is DF29+ — as the overwhelmingly dominant subclade of M253 — will be positive for all of these phyloequivalents, it is not so certain that all of these 18 individuals will be.

Whatever the status of these phyloequivalent SNPs for the I1-DF29 and I1-Z131 clades, it is logical to assume they will be consistent within each of these clades (barring any backmutations).  What is, again, not so certain is whether the root I1-M253* individuals will all be the same.  In other words, they may represent more than one subclade of I1-M253.  Therefore, fully testing the root I1-M253* individuals for these SNPs is of interest to anyone engaged in unraveling the root of the I1-M253 haplotree. 

Ideally, we would BigY test at least one of the Z131+ individuals and all of the M253* individuals.  Short of that, at least some of these individuals could test individual SNPs.  To better visualize the SNP status of these individuals, I have created the matrix below.  These individuals are repeated in the detailed matrices showing their other SNP values (see links below).

L1439 is probably, though not certainly, phyloequivalent to M253.  If L1439 is negative in anyone who is M253+, it would have to be in one of the few below who are M253* because the two next-level-downstream subclades are positive.