User-agent: *
Robot-version: 2.0 
Disallow: /images/
Request-rate: 1/10m 0800-1200  # 8:00 am to noon GMT
Request-rate: 1/20m 1201-2359  # noon to 11:59 pm GMT
Request-rate: 5/1m  0000-0759  # midnight to 7:59 am GMT