Is Baptism of a child still valid if one of the pouring during baptism misses? In the Rite of Baptism for one Child the Celebrant when baptizing the child, says and does:


  N., I baptize you in the name of the Father, 
  
  He immerses the child or pours water upon it. 
  
  and of the Son, 
  
  He immerses the child or pours water upon it a second time. 
  
  and of the Holy Spirit.
  
  He immerses the child or pours water upon it a third time.


The question: Is the baptism still valid if as the Celebrant pours the water each of the three times on the child, one of the pourings does not make contact with the child (and the miss was noticed on home video after the ceremony was conducted or perhaps was noticed by the family but for whatever reason, they did not presume it was their place to bring this to the attention of the Celebrant)?
Although the triple pouring is required for lawful baptism in the Western Rites of the Catholic church, it does not seem to be required for validity.  (Source: Moral Theology by Fr. Heribert Jone, a book that was recommended to me by a traditional Catholic priest, and which I therefore consider reliable.)  So if one or even two of the pourings miss  the target, this could be a sin on the part of the baptizer but it would not render the baptism invalid.  

Fr. Jone mentions that "several authors hold the flowing of one or two drops insufficient."