$licenses = Import-Csv $PSScriptRoot\LicenseCounts.csv
[Array]::Reverse($licenses)
$licenses = $licenses[0] | select *available*,*delta*

if($licenses.'E3 Available' -ge 25) {
    write-output "E3 greater than or equal to 25: $($licenses.'E3 Available')"
    $E3AvailableStyle = 'good'
} elseif ($licenses.'E3 Available' -ge 10 -and $licenses.'E3 Available' -lt 25) {
    $E3AvailableStyle = 'caution'
} else {
    $E3AvailableStyle = 'warning'
}

Output:

E3 greater than or equal to 25: 4