De Vos, J. M. et al. Estimating the Normal Background Rate of Species Extinction.
The normal background rate of extinction is very slow, and speciation and extinction should more or less equal out.
The count rate for Module2 is 150 kcps (idler photons), with a background rate of 14 kcps.
After the Gulf war, 3% of soldiers had PTSD compared with a background rate of about 1%.
Indeed, they suggest that the background rate of one extinction among a million species per year may be too high.
In particular, five times in this past 500 million years the steady background rate of extinction has shot up for a period of time.
The IceCube team says that the background rate of muons is closely correlated with the temperature of ozone layer above the South Pole.
After optimization of the temperatures of the PPLN crystals, the count rate for Module1 is 153 kcps (signal photons), with a background rate of 9 kcps.
To find out the background rate of tweets with these emoji, they worked out how often they appear when a game isn't being played.
Also associated with this storm was a significant drop in the measured background rate of the S3 CCD, which is used in the CTI calculation.
That is higher than the background rate of mitochondrial disease, but nevertheless suggests that faulty mitochondria are not the only cause of autistic symptoms.
