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. 2013 Dec 23;9(6):20130675. doi: 10.1098/rsbl.2013.0675

Table 1.

Circular statistics for rainfall and fruiting time of species in the two regions receiving the Indian SW and Indian NE monsoons.

data monsoons
dispersal (all species)
dispersal (only trees)
SW NE SW NE SW NE
no. observations 3906 1476 33 33 17 17
data grouped yes yes yes yes yes yes
group width (and no. groups) 30° (12) 30° (12) 30° (12) 30° (12) 30° (12) 30° (12)
mean vector (μ) 203.47° 284.98° 89.08° 220.58° 111.34° 190.67°
mean group July Oct Mar Aug Apr July
length of mean vector (r) 0.71 0.57 0.361 0.291 0.736 0.288
concentration 2.09 1.39 0.775 0.608 2.252 0.602
circular variance 0.29 0.43 0.639 0.709 0.264 0.712
circular standard deviation 47.13° 60.82° 81.77° 90.32° 44.86° 90.38°
one sample test
 Rayleigh test (Z) 1985.32 478.33 4.304 2.7945 9.209 1.412
 Rayleigh test (p) <1×10–12 <1×10–12 0.012 0.06 2.20×10−5 0.247