A few things you should keep in mind:
- Your data will be sent through an UDP datagram. I has a header of 8 bytes. It is then packed into an IPv4 (most likely) packet with a varying header size (20+ bytes).
- The firmware will “ping” the particle cloud every 23 minutes (see ref. https://docs.particle.io/guide/getting-started/data/electron/). This happens mostly to keep the UDP socket alive for NATed connexions.
- When connecting to the cloud, the handshake between the Electron and the Particle cloud is somewhat costly.
What you are seeing doesn’t seem like an outrageous amount of data for 10 days continuous usage.
JU