It appears that your WCT_Realtime.txt is using comma-decimal and not period-decimal numbers.
12/02/19 22:45:37 -4,7 92 -5,8 0,0 0 331 0,0 0,0 1011,5 331 0 m/s °C hPa mm 102435,00 0,4 52,8 119,8 3,2 21,2 33 -4,7 -1,4 0,7 01:00 -4,8 22:45 2,68 11:12 8 04:46 1011,5 22:41 994,9 00:02 0 0 1 -4,7 -8.1 0,0 0 0 331 0,0 0 0 0 331 134 Metres -7.4 0 0 0
When Brian (weather34) built the template, I don't think he anticipated comma-decimal formats in the raw-data files, so the livedata.php script doesn't currently handle that. Some of the displays just use the values in the realtime file .. others are processed by PHP and/or JavaScript to do calculations, and AFAIK, the default is to process numbers only with period-decimal notation.
I'll have to look at the scripts to see if there's an easy fix to allow comma-decimal notation to be used throughout the HWS.