COLUMTS 5^ - 56 BAROMETER 



Enter barometric pressure in millibars. Enter tens, units, and tenths 



only. (Example: 1012.62 = 12.6.) The recordable range is 9^5*0 to 



10ij-lj-.9 mbs. Enter pressure falling outside this range in the Remarks 



space of the data form. Table I9 converts inches to millibars. Table 



20 converts millimeters to millibars. 



COLUMNS 57 - 62 AIR TEMPERATURE, DRY BULB 



AKD WET BULB TEMPERATURES 



Enter dry bulb temperature in Columns 57-59 £^nd wet bulb temperat\ire 



in Columns 6O-62 in °C to tenths. Indicate negative temperature by 



a prominent red dash over the numeral (s) in Column(s) 57 and/ or 60. 



Table 21 converts °F to "C. 



COLUMNS 63 - 6h WEATHER 



There is a choice of two types of entries for weather: 



1. Enter an X in Column 63 and enter the weather 

 in Column 6k according to the single digit WMO Code 

 ^4-501 (9OA)* as shown in Table 22. This is the preferred 

 weather code . 



2. Enter present weather in Columns 63 and 6k accord- 

 ing to the two digit WMO Code 1+6 77 (92)* as shown in 

 Table 25. Because code figures 00 through 03 are not 

 descriptive of present weather. Code U5OI is preferred 

 instead of these code figures. Conversions from other 

 weather codes are given in Tables 23 and 2k. 



*Wumber in parentheses represents old WMO Code number. 



