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:
| Specimen weight/size | Calculated activity ( Bq ) | Calculated activity ( Ci ) | Estimated activity GR(api) | Estimated exposure ( mRem )/hr* |
| --- | --- | --- | --- | --- |
| 1000 g / 8.79 cm | 183355.0 | 4.96×10 −6 | 8,449.31 | 2.78 |
| 100 g / 4.08 cm | 18336.0 | 4.96×10 −7 | 844.93 | 0.28 |
| 10 g / 1.89 cm | 1834.0 | 4.96×10 −8 | 84.49 | 0.03 |
| 1 g / 8.79 mm | 183.0 | 4.96×10 −9 | 8.45 | 0.00 |
| 0.1 g / 4.08 mm | 18.0 | 4.96×10 −10 | 0.84 | 0.00 |
| 0.01 g / 1.89 mm | 2.0 | 4.96×10 −11 | 0.08 | 0.00 |
Question:
if the estimated exposure ( mrem )/hr* is 0.28, what is the specimen weight/size?
Answer:
1.0