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:
| Rank | City | Population | Area (km 2 ) | Density (inhabitants/km 2 ) | Altitude (mslm) |
| --- | --- | --- | --- | --- | --- |
| 1st | Alessandria | 94191.0 | 203.97 | 461.8 | 95.0 |
| 2nd | Casale Monferrato | 36039.0 | 86.32 | 417.5 | 116.0 |
| 3rd | Novi Ligure | 28581.0 | 54.22 | 527.1 | 197.0 |
| 4th | Tortona | 27476.0 | 99.29 | 276.7 | 122.0 |
| 5th | Acqui Terme | 20426.0 | 33.42 | 611.2 | 156.0 |
| 6th | Valenza | 20282.0 | 50.05 | 405.2 | 125.0 |
| 7th | Ovada | 11912.0 | 35.33 | 337.2 | 186.0 |
| 8th | Serravalle Scrivia | 6445.0 | 16.02 | 402.3 | 225.0 |
| 9th | Arquata Scrivia | 6260.0 | 30.36 | 206.2 | 248.0 |
| 10th | Castelnuovo Scrivia | 5473.0 | 45.42 | 120.5 | 85.0 |
Question:
What is the lowest density of serravalle scrivia?
Answer:
402.3