```json
{
  "TragedyDegree": 6,
  "ComedyDegree": 4
}
```

The story incorporates moderate tragic elements through Taylor's struggle with PTSD, his past experiences as a firefighter, and his initial resistance to change. These aspects contribute to a substantial emotional impact, though not extremely profound, thus scoring a 6 in Tragedy Degree. 

On the comedy side, while there are no explicit comedic elements, the story portrays a sense of hopefulness and a positive shift in Taylor's mental health. This provides some emotional uplift without being strongly comedic or delightfully happy, hence a score of 4 in Comedy Degree.
