How good is Tamron weather sealing?

So, I'm curious about Tamron's weather sealing capabilities. I've heard mixed reviews about how well their lenses hold up against the elements. Can you give me a clear idea of how reliable Tamron's weather sealing is? Is it comparable to other major brands like Canon or Nikon, or does it fall short in certain areas? I'm specifically interested in using Tamron lenses for outdoor photography, so it's important for me to know if they can withstand rain, snow, and other harsh conditions. Thanks for your insights!