This command is similar to the start measurement command, except a concurrent measurement is taken. Like the start measurement command, a send data command is required to retrieve the data. For example: 0C!000302<CR><LF>. The reply indicates that two readings (temperature and pressure) are available after 3 seconds. A 0D0! command is then issued to read these Levelogger values. The aC1 to aC9 commands are reserved for future use.