This is substantially more ice than observed on the same date last year, yet sea ice extent remains quite low compared to the long-term 1981 to 2010 average".
According to data from September 18, Arctic sea ice extent was about 1.97 million square miles, which is well above the level observed on the same date last year, yet still well below the 1981-2010 accordingaccording to the National Snow and Ice Data Center NSIDCC) in Boulder, Colo.
These holy days are usually observed on the following dates: March 20.
Multivariate analyses showed a gradual response of community structure to disturbance size: copepod assemblages in small plots attained the same structure of the control plots at day 5, while for larger-sized plots this occurred later and was observed on the following sampling date.
Root lifespan was estimated as the date on which roots were observed as black or disappeared minus the date on which the roots were initially observed on the window.
The Minor Rogations, observed on the three days before the Feast of the Ascension, date from the 5th century.
ʿĀshūrāʾ, Muslim holy day observed on the 10th of Muḥarram, the first month of the Islamic year (Gregorian date variable).
No seasonal trends were observed based on the date of diagnosis, nor when the patients were subdivided on the basis of age, sex or histological subtype.
To summarize the magnitude of the bias, we defined the absolute relative bias (ARB) at date c as: where are the cumulative cases estimated by the proposed methods or by the confirmed cases observed on date c without using the proposed methods, N c and are the cumulative confirmed cases based on the final status ("real data", "gold standard").
Figure 2 compares the daily new cases estimated by the proposed models, the confirmed curve (confirmed new cases observed on date c without using the proposed models), and the final status curve (confirmed new cases based on final status; the "gold standard").
