user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Dry air' regarding 'Density of air'
Table Content:
| Temperature T (°C) | Speed of sound c (m/s) | Density of air ρ (kg/m3) | Characteristic specific acoustic impedance z0 (Pa·s/m) |
| --- | --- | --- | --- |
| 35 | 351.88 | 1.1455 | 403.2 |
| 30 | 349.02 | 1.1644 | 406.5 |
| 25 | 346.13 | 1.1839 | 409.4 |
| 20 | 343.21 | 1.2041 | 413.3 |
| 15 | 340.27 | 1.2250 | 416.9 |
| 10 | 337.31 | 1.2466 | 420.5 |
| 5 | 334.32 | 1.2690 | 424.3 |
| 0 | 331.30 | 1.2922 | 428.0 |
| −5 | 328.25 | 1.3163 | 432.1 |
| −10 | 325.18 | 1.3413 | 436.1 |
| −15 | 322.07 | 1.3673 | 440.3 |
| −20 | 318.94 | 1.3943 | 444.6 |
| −25 | 315.77 | 1.4224 | 449.1 |


Question
How's air like at 20 °C?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["At 20 °C, dry air has a density of 1.2041 kg/m³."]