Change x-axis labels

Can you change the x-axis labels in a multi series chart? And if so how?

Here is the link to the chart but the labels are not right on the bottom

<img title='Check In Totals by Hour - http://sheet.zoho.com' alt='Check In Totals by Hour - http://sheet.zoho.com' src='http://sheet.zoho.com/publicgraphs/234983000000071065.png'>