Try changing this line of code:
<label><?php echo($row_WADWC_data['XLABEL']); ?></label>
to
<label><?php echo($row_WADWC_data['XLABEL'].$row_WADWC_data['DATAGROUP']); ?></label>
to format the price
change the line under to:
<value><?php echo(number_format($row_WADWC_data['YVALUE'], 2)); ?></value>