Hi, I did some testing and it looks like Dynamic Web Charts gives you the ability to change the initial value. In your Dynamic Web Charts folder you should have two files specific to your chart:
yourpage_data1.php and yourpage_dateparser1.php
Open the yourpage_data1.php and look for your y-axis line:
<yaxis color="#767a7f" gridcolor="#888d93">
and change it to:
<yaxis color="#767a7f" gridcolor="#888d93" min="2">
Similarly you could make the same change for your x-axis.