Sensor showing 0 values

[slackdance]

Hello!

Ordered parts quite some time ago and made everything ready. Yesterday, the board came and i set it up. It's working and showing values, but looking at the history, i get quite a few 0 values. What can cause this? The card is showing information normally, and i dont see these values there (that i have noticed).

The lux sensor has not arrived yet, so this is not reporting - buying figured if this was causing the error, all values would be scrambled?

https://imgur.com/gallery/qCS4SMg

The negative temperature at the start was me forgetting to change to C.