Powershell CSOM to retrieve Permission levels tagged for the group

Can any one code me to retrieve the permission levels tagged for the group using Powershell CSOM.Please tell me the property her is my code sample

Add-Type -Path "C:\Microsoft.SharePoint.Client.dll"    Add-Type -Path "C:\Microsoft.SharePoint.Client.Runtime.dll"            #SPO Client Object Model Context      $  spoCtx = New-Object Microsoft.SharePoint.Client.ClientContext($  sSiteUrl)      $  spoCredentials = New-Object System.Net.NetworkCredential($  sUserName, $  sPassword)        $  spoCtx.Credentials = $  spoCredentials             $  web = $  spoCtx.Web     $  spGroups =$  web.SiteGroups     $  spoCtx.Load($  spGroups)     $  spoCtx.ExecuteQuery()       foreach($  group in $  spGroups)     {         #Write-Host " Group Name = $  ($  group.Title)"      }