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:
| Method of administration[ citation needed ] | Category 1 | Category 2 | Category 3 | Category 4 | Category 5 |
| --- | --- | --- | --- | --- | --- |
| Oral: LD50 measured in mg/kg of bodyweight | 5.0 | 50.0 | 300 | 2 000 | 5 000 |
| Dermal: LD 50 measured in mg/kg of bodyweight | 50.0 | 200.0 | 1 000 | 2 000 | 5 000 |
| Gas Inhalation: LC 50 measured in ppmV | 100.0 | 500.0 | 2 500 | 20 000 | Undefined |
| Vapour Inhalation: LC 50 measured in mg/L | 0.5 | 2.0 | 10 | 20 | Undefined |
| Dust and Mist Inhalation: LC 50 measured in mg/L | 0.05 | 0.5 | 1.0 | 5.0 | Undefined |
Question:
What's the sum of all values in category 1 when category 3 is equal to 300?
Answer:
5.0