XBT XBT 5™^'°" XBT 



38 26 39 43 31 44 4 5 46 47 35 48 49 50 



100 



200 — 





300 — 



400 



500 



FiGUBE 18.— Profile of temperature (°C.), section 4, ICNAF 68-1, 15-26 January 1968. 



27 



