下表记录了在1标准大气压、温度为0℃-20℃时水的密度,请根据表中的相关数据回答问题:
0 | 999.840 | 7 | 999.901 | 14 | 999.244 |
1 | 999.898 | 8 | 999.848 | 15 | 999.099 |
2 | 999.940 | 9 | 999.781 | 16 | 998.943 |
3 | 999.964 | 10 | 999.699 | 17 | 998.774 |
4 | 999.972 | 11 | 999.605 | 18 | 998.595 |
5 | 999.964 | 12 | 999.497 | 19 | 998.404 |
6 | 999.940 | 13 | 999.377 | 20 | 998.203 |
②表中水的密度与温度的关系是___.