1. Instruction
      2. Residence Time
      3. Water Balance Uncertainty
      4. Apply to a real watershed: Step 1
      5. Apply to a real watershed: Step 2
      6. Apply to a real watershed: Step 3
      7. Apply to a real watershed: Step 4
      8. Apply to a real watershed: Step 5
      9. Apply to a real watershed: Step 6
      10. Check your understanding