如何用Minitab 14画对比图

数据如下：
Thickness Samples equipment Times
128.6 1 1 9:00am
128.8 2 1 9:00am
129.0 3 1 9:00am
129.1 4 1 9:00am
129.0 5 1 12:00pm
129.1 6 1 12:00pm
129.1 7 1 12:00pm
129.2 8 1 12:00pm
129.1 9 1 3:00pm
129.1 10 1 3:00pm
129.0 11 1 3:00pm
128.8 12 1 3:00pm
129.0 13 1 6:00pm
129.1 14 1 6:00pm
129.4 15 1 6:00pm
129.3 16 1 6:00pm
128.8 17 1 9:00pm
129.2 18 1 9:00pm
129.0 19 1 9:00pm
128.8 20 1 9:00pm
128.7 1 2 9:00am
129.0 2 2 9:00am
129.1 3 2 9:00am
129.3 4 2 9:00am
129.1 5 2 12:00pm
129.2 6 2 12:00pm
129.2 7 2 12:00pm
129.4 8 2 12:00pm
129.2 9 2 3:00pm
129.2 10 2 3:00pm
129.2 11 2 3:00pm
129.0 12 2 3:00pm
129.2 13 2 6:00pm
129.2 14 2 6:00pm
129.6 15 2 6:00pm
129.5 16 2 6:00pm
129.0 17 2 9:00pm
129.4 18 2 9:00pm
129.0 19 2 9:00pm
128.9 20 2 9:00pm

这是我在GE的资料上看到，不知道怎么把图作出来。附上资料上的图。大家帮忙看看怎么用MINITAB14作！