I am plotting a histogram by town and my horizontal axis for each town is wtloss. I have 30 different towns with values of weight loss ranging from -44 to 36 kg. I want the horizontal axes to have equal distances/increments of say 0.25 or any convenient value. Could someone provide me with the SAS code to have uniform distances for the horizontal axis of each town,please? Shown below is the code I used to draw the histograms. It worked ok,but the distances of each horizontal axis of each town was different,but I need equal distances for all the horizontal axes. Any advice,please?

proc gchart data=clindat; vbar wtloss; by town; run;