Using a region-, gender- and age-weighted sampling table, professional operators called respondents with random-digit dialling.
In the spring sampling, three locations (La Baells, Sant Ponç and Boadella) were positive for dreissenid DNA, and all five locations were positive in the autumn sampling (Table 2, Fig. 1).
In one landmark experiment, conducted in an upmarket grocery store in California, researchers set up a sampling table with a display of jams.
The results showed different patterns between the bacterial classes in the CTS-treated soils and the unamended soil, except for the lowest and highest CTS rates in different periods of sampling (NOEC = 2.5 t/ha at 45 and 150 days of sampling and NOEC > 20 t/ha at 75 and 180 days of sampling; Table S1).
The VFA showed an increasing tendency from the very beginning of sampling (Table 3).
Since the distribution of enrolled students vary significantly between the four universities, we used proportionate sampling (Table 2).
The number of living trees per provenance available for sampling (Table 1) differed due to variable tree mortality among test sites.
On the other hand, we cannot perform the F test for linear regression during the 2-hour increasing phases as too few measurements (N = 3−4) of data are available even in the case of 30-minute sampling (Table 1).
Considering the stratified sampling (Table 7), the computing of independent sample sizes for each stratum is necessary and must conform the same confidence interval and confidence level defined in the sampling strategy (subsection 4.4).
Derivations of these two scenarios are implemented in TephraProb in order to allow additional subjective choices to the stochastic sampling (Table 1): Wind Range Scenarios (WRS) constrain the sampling of wind conditions within pre defined radial sector around the volcano.
Major and trace elements were measured with inductively coupled plasma and mass spectrometry (ICP MS) in the filtered and acidified water samples within 2 weeks after sampling (Table 2).
