| JAN | FEB | MAR | APR |
I | 8. 2 | 10. 3 | 13. 7 | 18 |
K | −496 | −455 | −379 | −273 |
Index Grade | Grade 1 | Grade 1 | Grade 2 | Grade 3 |
Body feeling | Cold | Cold | Chill | Comfortable |
| MAY | JUN | JUL | AUG |
I | 21. 1 | 23. 4 | 25. 7 | 25. 2 |
K | −198 | −148 | −81 | −90 |
Index Grade | Grade 3 | Grade 3 | Grade 4 | Grade 3 |
Body feeling | Comfortable | Comfortable | Hot | Comfortable |
| SEP | OCT | NOV | DEC |
I | 22. 2 | 17. 6 | 13. 9 | 9. 5 |
K | −176 | −281 | −367 | −463 |
Index Grade | Grade 3 | Grade 3 | Grade 2 | Grade 1 |
Body feeling | Comfortable | Comfortable | Chill | Cold |