>From the first look, the data seems to be ASCII data (I am not sure) and it is a Time-Longitude Hovmoller plot. The same plot can be reproduced without much difficulty in other graphics softwares such as Matlab or NCL and the missing data can be represented well. I am not supposed to say this since this is Grads Forum. Best of Luck.<br>
-- <br>Sincerely<br>***********************************************<br>Jayakrishnan.P.R<br>CSIR-Senior Research Fellow<br>Department of Atmospheric Sciences<br>Cochin University of Science and Technology (CUSAT), Cochin-682 016<br>
Kerala, India.<br>Mob: 09895417565<br><br>***********************************************