Required dso calculator in excel sheet

DEAR EXPERTS, 

I need the follwing excel calulator sheets for given below reports, 

1. Average days sales outstanding (DSO)

2. Average days delinquent

3. DSO vs. best possible DSO                                                                                  

4. Collection effectiveness index                                                                    

5. Accounts receivable turnover ratio 

Any body availble this pls share with me E-mail ID- narpatjakhar @ gmail.com