Sentence:  Boys 32 , 23 , 31 , 17 , 30 , 19 , and 24 had `` same schedule '' at Onset and Completion ; <WSD>thus</WSD> early forecasting of the pubescent stage would appear possible for only seven boys . 
Meaning of the word marked with <WSD> tags:  (used to introduce a logical conclusion) from that fact or reason or as a result