The normal branch of Dvali-Gabadadze-Porrati braneworld gravity with brane tension is confronted by the currently available cosmic observations from the geometrical and dynamical perspectives .
On the geometrical side , the type Ia supernova as standard candle , the baryon acoustic oscillation as standard ruler and the cosmic microwave background measurement from the first released 15.5 months data were used to fix the background evolutions .
On the dynamical side , the redshift space distortion data will be used to determine the evolution of the matter perturbation .
Through a Markov chain Monte Carlo analysis , we found the dimensionless crossover scale \Omega _ { r _ { c } } = 1 / ( 4 H ^ { 2 } _ { 0 } r ^ { 2 } _ { c } ) = 0.00183 _ { -0.00183 } ^ { +0.000338 } in a spatially flat normal branch of Dvali-Gabadadze-Porrati braneworld .
This result suggests that the crossover scale r _ { c } should be around 12 H ^ { -1 } _ { 0 } which is consistent with the previous result r _ { c } > 3 H ^ { -1 } _ { 0 } and greater .
It also implies that the five-dimensional gravity effect is weak to be observed in H ^ { -1 } _ { 0 } scale .