Word shift graph comparing the happiest hour (5 am to 6 am) relative to the least happy hour (10 pm to 11 pm).

<p>Days given equal weighting with outlier dates removed. (See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0026752#pone.0026752.s007" target="_blank">Fig. S6</a> for word shifts based on alternate distributions.)</p>