-4
-2
0
2
4
-4
-2
0
2
4
t = 0.2
-4
-2
0
2
4
-4
-2
0
2
4
t = 0.6
-4
-2
0
2
4
-4
-2
0
2
4
t = 1.5
-4
-2
0
2
4
-4
-2
0
2
4
t = 3
0
1
2
3
4
5
temperature