Ok PBS gurus, explain what the (Coverage) means in this excerpt from my results report:

Best Line Before:
D5138 2015-02-19 (011:20) (Coverage)
D5174 2015-02-25 (011:40)
D5190 2015-01-31 (017:09) (Coverage)
D5229 2015-02-13 (016:50)
D5313 2015-02-05 (017:26) (Coverage)
Total Credit: (074:25)