The ranges of the estimated durations are based on errors in the ages of geological stage boundaries (Ogg, 2012; Ogg and Hinnov, 2012) and uncertainties in the stratigraphic positions of the geological boundaries described by Hori (1990), Sugiyama (1997), Carter and Hori (2005), and Gröcke et al. (2011).
The record consists of 703 δO analyses with an average resolution of 2.5 years, less than 5-year errors in Th age, and less than 15-year errors from subsampling position (23).
This may relate to a large error in the age data of Matul et al. (2002).
The potential sources of error in the age model of Site U1427 with respect to LR04 are uncertainties in the correlation of benthic foraminiferal δ18O measurements and TWC indicators with LR04, and age estimations of widespread tephras and radiolarian biohorizons.
An estimate for the age of lead loss is needed, but in the absence of prior knowledge of this age, the recalculation procedure can be set up in such a way that the bias in initial age caused by a systematic error in the age of lead loss is minimized.
He says "this is an exciting observation," but notes that even a slight error in the age determination--related to its brightness, from which its mass can be inferred--could push the mass of the object high enough to make it a brown dwarf: a "failed star" larger than a planet but not massive enough for hydrogen fusion to occur in the core.
The maximum relative error in the age range a=70,71,…,100 is 1.7%% for λ0 and 3.2 % for λ1.
Indeed, the maximum relative error in the age range a=70,71,…,100 is 0.90 % for λ0 and 1.26 % for λ1.
Errors in the gestational age of live births may have influenced the gestational age-dependent mortality patterns to a small extent, although sensitivity analyses carried out after excluding births with imputed gestational ages showed similar patterns (data not shown).
