Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Magnet | B r (T) | H ci (kA/m) | (BH) max (kJ/m 3 ) | T c (°C) |
| --- | --- | --- | --- | --- |
| Nd 2 Fe 14 B (sintered) | 1.0–1.4 | 750–2000 | 200–440 | 310–400 |
| Nd 2 Fe 14 B (bonded) | 0.6–0.7 | 600–1200 | 60–100 | 310–400 |
| SmCo 5 (sintered) | 0.8–1.1 | 600–2000 | 120–200 | 720 |
| Sm(Co,Fe,Cu,Zr) 7 (sintered) | 0.9–1.15 | 450–1300 | 150–240 | 800 |
| Alnico (sintered) | 0.6–1.4 | 275 | 10–88 | 700–860 |
Question:
When 720 is the t c (°c) what is the   h ci (ka/m)?
Answer:
600–2000