101 



CODE TABLES 



Code Table No . Page 



1 Symbol Y - Day of the Week ~T02" 



2 Symbol Q - Octant of the Globe 102 



3 Symbol N - Fraction of the Celestial Dome Covered by 



Clouds, in Eighths 102 



Symbol Nj^ - Fraction of Celestial Dome Covered by 



Type of Cloud Reported for CL(or C^yj) 102 



4 Symbol dd - True Direction from Which Wind is Blowing. . 103 

 Symbol d^d^ - Direction from Which Waves Come 103 



5 Symbol VV - Visibility 103 



6 Symbol ww - Present Weather 104 



7 Symbol W - Past Weather 106 



8 Symbol PPP - Corrected Barometric Pressure 107 



9 Symbol C^ - Clouds of Types Stratocumulus, Stratus, 



Cumulus, and Cumulonimbus 108 



10 Symbol C-ryr - Clouds of Types Altocumulus, Altostratus, 



and Nimbostratus 109 



11 Symbol Ctt - Clouds of Types Cirrus, Cirrostratus, and 



Cirrocumulus 110 



12 Symbol h - Height of Base of Lowest C-j^ ( or Cjyj) Cloud 



Above Sea Ill 



13 Symbol Dg - Ship's Course Ill 



14 Symbol Vg - Ship's Speed Ill 



15 Symbol a - Barometer Change Characteristics in the Last 



3 Hours 112 



16 Symbol pp - A— ..^t of Barometric Change in Last 3 Hours 113 



17 Symbol P^ - Period of Waves 114 



18 Symbol H^ - Height of Waves 114 



19 Symbol C2 - Description of Kind of Ice 115 



20 Symbol K - Effect of Ice on Navigation 115 



21 Symbol D- - Bearing of Ice -Limit 115 



22 Symbol r - Distance to Ice from Reporting Ship 116 



23 Symbol e - Orientation of Ice-Limit 116 



MISCELLANEOUS TABLES 

 Table No. 



24 Celsius (Centigrade to Fahrenheit Temperatures 117 



25 Temperature of Dew Point in Degrees Celsius 119 



26 Fahrenheit to Celsius Temperatures 127 



27 Correction of Mercurial Barometer for Temperature .... 129 



28 Reduction of Barometric Reading to Mean Sea Level 130 



29 Reduction of Mercurial Barometer to Standard Gravity . . . 130 

 29A Millimeters to Millibars 130 



30 Q-Code Signals (Selected) 131 



