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:
| Low Estimate | High Estimate | Type | Location | Date |
| --- | --- | --- | --- | --- |
| 80000.0 | 80400.0 | Mass suicide, murder | Japan | 1945 |
| 8000.0 | 8000.0 | Mass suicide | Mariana Islands | 1944 |
| 3000.0 | 80400.0 | Mass human sacrifice | Templo Mayor , Tenochtitlan | 1487 |
| 960.0 | 960.0 | Mass suicide | Judea | 73 |
| 913.0 | 913.0 | Mass suicide, murder | Guyana | 1978 |
| 300.0 | 1000.0 | Mass suicide | Uganda | 2000, March |
| 53.0 | 53.0 | Mass suicide | Switzerland, Canada | 1994 |
| 39.0 | 39.0 | Mass suicide | California | 1997 |
| 16.0 | 16.0 | Mass suicide | France | 1995, December 23 |
Question:
What is the sum of low estimate(s) that is listed for the date of 1978?
Answer:
913.0