Why connects the Gateway to so many weather stations?

i have seen with netstat that the geateway make connection too many different weather stations:
94.155.49.47:https Weather station BUXX0005 - Sofia
78.129.180.14:9001 Weather station UKXX3140 - Bingham
95.215.45.138 Weather station SWXX0007 - Gothenburg
185.96.180.164:https Weather station GMXX0040 - Frankfurt am Main
82.197.218.97:9001 Weather station NLXX0053 - Almere Stad
and some more.

Why are all these connections? All with SYN_SENT