C gets up, J scoots in his chair over into C's place. K checks on trial result. S and B in gp 2 switch again, in K's absence, so S is in control of the mouse. K returns, T leaves. J swings in his chair, studying his paper.
C calculates with a calculator.
C reports between gps. K reports averages, gets little observable response from mates. Crosstalk about synchronizing efforts. J rolls chair over to S. Gp 2 finds something strange on screen. J reads out averages.