ner_tags: O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Citation I-Citation O O O O B-Location O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Citation I-Citation I-Citation I-Citation O B-Location O O O O O O O O O O O O O B-CelestialObject O O O O O O O O O O O O O O O O O O O O O O B-Location O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Citation I-Citation I-Citation I-Citation I-Citation I-Citation O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Location B-Citation I-Citation I-Citation O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Location B-Location B-Location B-Location O B-Location O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Location O B-Location O B-Location O B-Location O O B-Location O O O O O O O O O O O O O O O O O B-Location O B-Formula I-Formula I-Formula B-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula B-Location O B-Formula I-Formula I-Formula B-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula B-Location O B-Formula I-Formula I-Formula B-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula B-Location O B-Formula I-Formula I-Formula B-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula O B-Location O B-Formula I-Formula I-Formula B-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula I-Formula O B-Formula I-Formula I-Formula O O B-Formula I-Formula I-Formula I-Formula I-Formula O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Formula I-Formula I-Formula O O O O O O B-Location O B-Location O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
tokens: Lake Meteorite. The first specimen of 131 g was discovered on 2000 September 17. Later investigations on 2006 November identified additional 526 fragments with total mass of 8991 g, i.e. 900 per cent of increase of the total known weight (Verish 2009 ). The distribution of Antarctic ordinary chondrites and elsewhere present similar entropic indices (2.12 and 2.18) what suggests equivalent mechanisms that yield the observed distributions. On the other hand, β q present a variation of the order of 10 times between the distributions. This result confirms the tendency identified by Huss ( 1990 ); the Antarctic meteorites present mean mass smaller than those found in the rest of the Earth. The combined sample is modeled by a q -stretched exponential, most probably due to the influence of the larger mean mass of non-Antarctic meteorites. These results, and the great dispersion of the entropic indices, suggest that the observed distributions, more properly modeled by q -stretched exponential, are more influenced by the ‘gathering bias’. 4.3 Findings/fall location sites Halliday, Blackwell Griffin ( 1989 ) suggested an overall rate of 83 falls of meteorites every 10 6 km 2 /yr. Considering this estimate, it would be expected 85 events per year in Brazil (de Carvalho 2010 ). This amount exceeds the number of meteorites collected in the last two centuries in the country. This suggests the occurrence of a gathering bias on the observed distribution. When meteorites are separated by regions with large territorial areas (Russia, Canada, USA, China, and Brazil), we verified that the distributions are described by q -stretched exponential with a P value ≥0.95 (Fig. 6 ). Figure 6. Inverse cumulative distributions of mass for some types of meteorites found in Brazil (circles), Canada (diamonds), China (squares), Russia (crosses), and USA (plus). The red solid lines represent the fitting of q -stretched exponentials for the meteorites found in Brazil ( q = 1.87, β q = 5.43 × 10 −3 g −1 , N t = 74, and γ = 0.57), Canada ( q = 1.47, β q = 5.08 × 10 −3 g −1 , N t = 65, and γ = 0.61), China ( q = 1.64, β q = 7.48 × 10 −2 g −1 , N t = 359, and γ = 0.39), Russia ( q = 1.91, β q = 4.20 × 10 −3 g −1 , N t = 144, and γ = 0.61), and USA ( q = 1.43, β q = 2.60 × 10 −2 g −1 , N t = 1816, and γ = 0.48). The average γ = 0.53 ± 0.08 overlaps with the value found on sub-Section 4.2. This result may be understood if the fraction of meteorites by mineralogical type is also valid for national (local) samples. This hypothesis is reasonable, since the weight average shape parameter of the total sample of meteorite types modeled by q -stretched exponential is γ = 0.65. The values of β q for China and USA are about 10 times smaller than the other national samples. This implies a smaller number of meteorites of large mass for these two countries. The origin for this may be due to the fraction of iron meteorites in the samples. Iron meteorites are heavier in all national samples, but