The fastness grading both for shade change staining

The fastness grading for shade change staining could be summarized :

Gray-scale:                              Observation:                              Remark:
5                                           Obliviously no change                     Excellent fast
4 – 5                                      A few change                                    fast
4                                            Slightly change                                 fast
3 - 4                                      more than change                             Average
3                                           Moderately change                            Average                             
2 – 3                                    distinctly changed                              No fast                         
1 - 2                                     distinctly changed                              No fast
1                                           Completely change                            No fast