Actual delay time in obtaining redshift observations vs. the minimum possible delay. These are from the three premier observing sites La Palma, Chile, and Mauna Kea. GRBs apparently observed before the minimum possible delay (lower right) were observed by other observatories (e.g., in China or Russia) or by UVOT. Large delays despite being well-placed (top left) are usually down to weather or technical issues, instrumentation not being mounted or the lack of a redshift programme.