Problem with data from MQTT feed seeming to be "lost"

Emoncms
12

Ok, I set up the Tasmota to deliver data every 15s (teleperiod 15).

Then I set up 4 feeds from the 1 input: fixed 5s (“select”), fixed 10s, fixed 15s, and variable.

I then gather some data:

Date Fixed_5s Fixed_10s Fixed_15s Variable
1654806900 null 21.4 21.4 null
1654806905 21.4 21.4 21.4 21.4
1654806910 null null 21.4 null
1654806915 null null 21.4 null
1654806920 21.4 21.4 21.4 21.4
1654806925 null 21.4 21.4 null
1654806930 null 21.4 21.4 null
1654806935 21.4 21.4 21.4 21.4
1654806940 null null 21.4 null
1654806945 null null 21.4 null
1654806950 21.4 21.4 21.4 21.4
1654806955 null 21.4 21.4 null
1654806960 null 21.4 21.4 null
1654806965 21.4 21.4 21.4 21.4
1654806970 null null 21.4 null
1654806975 null null 21.4 null
1654806980 21.4 21.4 21.4 21.4
1654806985 null 21.4 21.4 null
1654806990 null 21.4 21.4 null
1654806995 21.4 21.4 21.4 21.4
1654807000 null null 21.4 null
1654807005 null null 21.4 null
1654807010 21.4 21.4 21.4 21.4
1654807015 null 21.4 21.4 null
1654807020 null 21.4 21.4 null
1654807025 21.4 21.4 21.4 21.4
1654807030 null null 21.4 null
1654807035 null null 21.4 null
1654807040 21.4 21.4 21.4 21.4
1654807045 null 21.4 21.4 null
1654807050 null 21.4 21.4 null
1654807055 21.4 21.4 21.4 21.4
1654807060 null null 21.4 null
1654807065 null null 21.4 null
1654807070 21.4 21.4 21.4 21.4
1654807075 null 21.4 21.4 null
1654807080 null 21.4 21.4 null
1654807085 21.4 21.4 21.4 21.4

I’m not fully sure what’s going on here, so I won’t speculate what this means.