if ($Worksheet->{Cells}[$row][$jit_ear_rise_col]){
	my @jit_values;
	foreach my $col ($jit_ear_rise_col .. $jit_late_fall_col){
	  push @jit_values,$Worksheet->{Cells}[$row][$col]->Value;
	  }
	$clocks{$pin_name}{'jit'} = @jit_values;
	}

my @jitter_values = $hashref->{'jit'} ;
foreach (@jitter_values){print "$_\n";}