Comparison between the 
correspondig maxima, 
in ka, dongge05.txt, 
Wang et al, 2005
======================
ObsPer  DerPer
4.38     ----
3.13     3.55
2.31     2.00
1.83     ----
1.46     1.4
1.25     ----
1.09     ----
0.97     0.95
0.80     0.84
0.72     0.71
0.57     0.57
(0.52)   0.54
0.49     ----
(0.42)   0.41 
0.35     0.33