Table 1: Values of mesogranule lifetime and drift velocity from different authors.
lifetime $v_{\rm {drift}}$ [ m s^-1]

November et al. (1981) 2 h -

Deubner (1989) ${\geq}30~{\min}$ 450

Muller et al. (1992) 3 h 300-400

Ueno & Kitai (1998) ${\simeq} 40~{\min}$ 446

Roudier et al. (1998) $30{-}40~{\min}$ 500

( $t \geq 70 {\min}$ )

Ploner et al. (2000) $1{-}2~{\rm h}$ -

Shine et al. (2000) $4{-}6~{\rm h}$ 500-1000

present work $158~{\min}$ 304

**Table 1:** Values of mesogranule lifetime and drift velocity from different authors.
	lifetime	$v_{\rm {drift}}$ [ m s^-1]
November et al. (1981)	2 h	-
Deubner (1989)	${\geq}30~{\min}$	450
Muller et al. (1992)	3 h	300-400
Ueno & Kitai (1998)	${\simeq} 40~{\min}$	446
Roudier et al. (1998)	$30{-}40~{\min}$	500
		( $t \geq 70 {\min}$ )
Ploner et al. (2000)	$1{-}2~{\rm h}$	-
Shine et al. (2000)	$4{-}6~{\rm h}$	500-1000
present work	$158~{\min}$	304

Source LaTeX | All tables | In the text

	1 Introduction
	2 Preparation of divergence maps
	3 Feature tracking
	4 Results
	5 Discussion
	6 Conclusion
	References
	Online Material