There are three reasons for 0’s in swimming data:
1. Recorded data is not transferred from the sensor to the phone over the Bluetooth.
Phone SW asks confirmation from the user to ignore data. User should always know that she/he has ignored data from one sensor. In this case other sensor shows 0’s in WEB.
2. There is no reliable Internet connection from the phone.
Data is moved from sensor to phone, but cannot be transferred from phone to Internet.
Data from one sensor can be lost, if user comes out from Session. It is possible that only one sensor data is transferred and other sensor data shows 0’s in WEB.
3. Analysis in cloud fails for some reason.
When analysis fails, analysis software shows 0’s to all other data, but stroke count is 3.