color change points:
0.45
0.673
1.112
1.552
1.992
2.431
2.643
2.979
3.299
3.522
3.961
4.181
4.615
5.06
5.495
5.931
6.151
6.466
6.813
7.027
7.465
7.689
8.118
8.551
8.994
9.441
9.651
9.980