[CJefferson]

The problem is that this looks tempting, but what if I change:

    Then I should see the page downloaded in less than 0.5 seconds

to

    Then I want the page to download in under a second.

The natural English looks very tempting, but the actual terms you can use are very restrictive.

[eliot_sykes]

Thinking monitors.txt would need a validator, plus the monitoring providers can alert customers when they've entered something invalid.