How do I add, update or delete readings?

1. If needed tap the button, then tap Historical View.
   
   
   
   
   
2. To Add
   
   From the historical view page, tap the button in the bottom right corner.
   
   
   
3. To Update
   
   From the historical view page, tap the entry you wish to edit.
   
   
   
4. To Delete
   
   From the historical view page, tap the menu button in the upper right corner, then tap the "Delete" menu item.
   
   
   
   Next tap the items you want to delete
   
   
   
   Finally, tap the button in the top right corner.