The smooth contour map of the whole field was obtained by ordinary kriging interpolation, VQT algorithm was then used to split the smooth contour map into strata of different number desired, the sampling locations can be selected within each stratum in subsequent sampling.
It is concluded that sample bulking and returning to the same sites in subsequent sampling rounds are not recommendable.
The new analysis looked more closely, however, using a standard mark-and-recapture technique: Researchers sampling a body of water mark individual catfish that turn up, release them, and then calculate the total population based on how often those marked fish turn up in subsequent sampling.
In subsequent samples of antisepsis, growth was observed only in 2 cases and logarithm was between 1.7 and 2. The reduction factor could be calculated in 19 cases being found between 1.18 and 4.56, so the average was 3.24 ± 0.76.
Five (31%) of the 16 repeatedly sampled tagged bats captured in 2008 were positive for CoV RNA, but no CoV RNA could be detected in subsequent samples (Table 3).
Results in one sample often were not replicated in subsequent samples, possibly indicating false positive reports.
This adjustment appeared to solve this issue and resulted in normally distributed factor scores in subsequent samples.
Levels of excreted viral RNA decreased below the detection level in some animals, but RNA was detected in subsequent samples.
Thus, mutations found in subsequent samples were deemed to be genuine and not a result of experimental error.
