time step

chart.html

@@ -162,6 +162,7 @@ async function mainfunc() {
 								return tick.toString() + ':00';
 							},
                                                         beginAtZero: true,
+							stepSize: 3,
                                                         max: 24
 
 						},
@@ -171,7 +172,7 @@ async function mainfunc() {
 						}
 					}]
 				},
-		                responsive: true,
+		responsive: true,
                 maintainAspectRatio: false
         }
     });

chart_linear.html

@@ -157,6 +157,7 @@ async function mainfunc() {
 								return tick.toString() + ':00';
 							},
 							beginAtZero: true,
+							stepSize: 3,
 							max: 24
 						},
 						scaleLabel: {