







10 





20 





30 





40 





50 



D 



60 



E 



70 



P 



80 



T 



90 



H 



100 





120 



(M) 



150 





200 





250 





300 





400 





500 





N MI 





KB 



MEAN XBT TEMPERATURE* DEG-C 01 APRIL 



23.5 23.2 22.8 22.3 21.7 21.2 20.5 19.9 19.1 16.7 17.8 17.1 16.7 15.7 15.3 11.9 14.2 13.1 12.8 12.1 



23.5 23.2 22.7 22.2 21.6 21.2 20.5 19.8 19.1 18.7 17.8 17.1 16.6 15.6 15.3 in. 8 11.1 13.3 12.7 12.1 



23.4 23.2 22.7 22.2 21.6 21.1 20.4 19.8 19.1 18.7 17. R 17.1 16.6 15.6 15.2 14.8 14.2 13.3 12.7 12.0 



23.3 23.1 22.7 22.2 21.5 21.1 20.3 19.7 19.1 18.7 17. R 17.1 16.6 15.7 15.2 14.8 14.2 13.3 12.7 12.0 

 23.2 23.1 22.6 22.1 21.4 21.1 20.3 19.7 19.1 18.7 17.9 17.1 16.7 15.7 15.2 14.8 14.2 13.3 12.6 11.8 



23.1 23.0 22.5 22.0 21.4 21.0 20.3 19.7 19.1 18.7 17.9 17.1 16.8 15.7 15.2 14.8 14.2 13.2 12.5 11.5 

 22.9 22.8 22.4 21.9 21.2 21.0 20.2 19.6 19.0 18.6 17.9 17.1 16.8 15.6 15.2 14.8 14.1 13.0 12.4 11.2 



22.8 22.7 22.2 21.8 21.0 20.8 20.2 19.4 18.9 ie.5 17.9 17.0 16.7 15.6 15.2 14.7 14.1 12.9 12.3 10.9 



22.5 22.5 22.0 21.7 20.9 20.7 20.0 19.2 18.8 18.3 17. R 17.0 16.6 15.5 15.1 14.7 14.1 12.7 12.1 10.5 



22.2 22.2 21.8 21.5 20.7 20.5 19.7 19.1 18.6 18.2 17.7 17.0 16.6 15.5 15.1 14.7 14.1 12.5 11.7 10.0 



21.9 21.9 21.6 21.3 20.5 20.3 19.5 18.9 18.4 18.1 17.6 16.9 16.6 15.4 15.1 14.5 13.8 12.0 11.1 9.6 



21.4 21.4 21.1 20.8 19.9 19.7 18.9 18.4 17.9 17.9 17.4 16.7 16.5 15.0 14.2 13.6 12.8 10.9 10.2 9.2 

 20.0 20.0 20.0 19.7 18.7 18.6 18.0 17.3 16.8 16.8 15.9 15.6 15.2 13.3 12.2 11.7 11.1 9.8 9.3 8.8 

 17.2 17.5 17.6 17.2 16.2 16.3 15.6 14.6 13.9 14.0 13.2 12.4 12.1 10.9 10.2 9.8 9.4 8.8 8.5 8.1 

 14.2 14.6 14.8 14.4 13.5 13.4 12.9 12.2 11.8 11.7 11.3 10.8 10.6 9.7 9.2 8.8 8.5 8.1 7.8 7.5 

 11.7 11.9 12.1 12.1 11.7 11.6 11.2 10.9 10.6 10.4 10.1 9.6 9.5 8.6 8.3 7.9 7.7 7.3 7.1 7.0 



8.6 8.8 8.9 9.2 8.9 8.9 8.7 8.6 8.3 8.2 8.0 7.5 7.5 6.8 6.6 6.5 6.4 6.2 6.2 6.1 



6.5 6.6 6.7 6.9 6.7 6.7 6.6 6.5 6.4 6.3 6.2 5.9 5.9 5.6 5.7 5.4 5.5 5.4 5.5 5.5 



50""" 150 250 350 450 550 650 750 850 950 1050 1150 1250 1350 1450 1550 1650 1750 1850 1950 



93 278 463 649 834 1019 1205 1390 1575 1761 1946 2131 2317 2502 2687 2872 3058 3243 3428 3614 



DISTANCE 



MEAN XBT TEMPERATURE. DEG-C MID-APRIL 



23.7 23.4 23.0 22.5 21.9 21.4 20.6 20.2 19.4 18.9 17.9 17.2 16.7 15.9 15.5 15.0 14.3 13.4 12.8 12.0 



23.7 23.4 22.9 22.4 21.9 21.4 20.6 20.2 19.3 18.8 17. a 17.1 16.7 15.8 15.3 14.9 14.3 13.4 12.7 11.9 



23.6 23.3 22.9 22.4 21.8 21.3 20.5 20.1 19.3 18.8 17.9 17.1 16.6 15.8 15.2 14.9 14.3 13.3 12.7 11.8 



23.6 23.2 22. E 22.4 21.7 21.2 20.4 20.1 19.2 18.8 17.8 17.1 16.6 15.8 15.2 14.8 14.3 13.3 12.7 11.8 



23.4 23.2 22.7 22.3 21.6 21.1 20.3 20. 19.2 16.7 17.9 17.1 16.6 15.8 15.2 14.8 14.3 13.3 12.7 11.6 



23.3 23.0 22.6 22.2 21.5 21.0 20.2 19.9 19.2 18.6 17. " 17.2 16.7 15.8 15.2 14.9 14.3 13.2 12.7 11.3 



23.1 22.8 22.4 22.0 21.3 21.0 20.2 19.7 19.1 18.6 17.9 17.2 16.8 15.8 15.3 14.8 14.3 13.0 12.6 11.1 



22.9 22.6 22.3 22.0 21.1 20.9 20.1 19.5 19.1 18.5 17.1 17.2 16.8 15.8 15.3 14.8 14.2 12.8 12.4 10.8 



22.6 22.4 22.1 21.8 21.0 20.7 19.9 19.3 18.9 18.3 17.9 17.1 16.7 15.7 15.2 14.8 14.2 12.7 12.1 10.5 



22.3 22.1 2 T. 9 21.6 20.7 20.5 19.7 19.2 18.7 18.1 17. R 17.1 16.6 15.7 15.2 14.7 14.1 12.4 11.7 10.0 

 22.1 21.8 21.6 21.4 20.5 20.3 19.4 18.9 18.5 16.0 17.6 17.0 16.6 15.5 15.2 14.6 13.9 11.9 11.1 9.7 



21.4 21.2 20.9 20.9 19.8 19.6 18.7 18.4 17.9 17.7 17.3 16.8 16.4 15.2 14.5 13.9 13.0 10.7 10.1 9.2 

 19.9 19.9 19.8 19.8 18.7 IB. 4 17.9 17.3 16.8 16.7 15.9 15.8 15.2 13.5 12.5 11.8 11.2 9.7 9.4 8.8 

 17.1 17.3 17.5 17.2 16.3 16.2 15.6 14.7 14.0 14.0 13.2 12.6 12.1 11.0 10.3 9.9 9.5 8.8 8.6 8.2 

 14.1 14.5 14.6 14.5 13.7 13.3 12.9 12.3 11.8 11.7 11.4 10.8 10.5 9.R 9.3 9.0 8.6 8.1 7.9 7.6 



11.5 11.8 11.9 12.2 11.8 11.5 11.2 10.9 10.6 10.4 10.2 9.7 9.5 8.8 8.3 8.0 7.8 7.3 7.2 7.1 



8.5 8.8 8.9 9.2 9.0 8.9 8.7 8.6 8.3 6.2 8.0 7.6 7.5 6.9 6.6 6.6 6.5 6.3 6.2 6.2 



6.6 6.7 6.8 7.0 6.8 6.7 t>.6 6.5 6.4 6.3 6.7 5.9 5.8 5.6 5.7 5.5 5.6 5.5 5.5 5.5 



50 150 250 350 450 550 650 750 850 950 1C50 1150 1250 1350 1450 1550 1650 1750 1850 1950 



9) 278 463 649 8i4 1019 12"5 1390 1575 1761 1946 2131 2317 2502 2687 2872 3058 3243 3428 3614 



DISTANCE 











10 





20 





30 





40 





50 



D 



60 



E 



70 



P 



80 



T 



90 



H 



100 





120 



(M) 



150 





200 





250 





300 





400 





500 





S BI 





KB 



27 



