400 



CORRELATION OF DISTRIBUTIONAL FEATURES. 



Table 23. — Climoiic extremefi for the dei^erl. 



Plate 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 43 

 44 

 45 



46 

 47 

 48 

 49 

 50 

 51 

 52 



53 



54 



58 

 59 

 60 



63 



65 

 66 



68 



69 



70 

 71 

 72 



Teinperature: 



Days in normal frostless season (/s.) 



Hot days, fs 



Cold days, fs 



Remainder summation above 32°, year (thousands) , 



Remainder summation above 39°, fs. (thousands) . . 



Exponential summation, fs (hundreds) 



Physiological summation, fs (thousands) 



Absolute minimum 



Normal daily mean, coldest 14 days of year (°F.) . . 



Normal daily mean, hottest 6 weeks of year (°F.) . 



Normal daily mean, year (°F.) 



Precipitation; 



Normal daily mean, fs (inch) 



Normal No. rainy days (over 0.10 inch), fs 



Normal No. dry days (0.10 inch or less), fs 



Dry days, percentage of total, fs (per cent) 



Days in longest normal rainy period, fs 



Days in longest normal dry period, fs 



Mean total, year (inches) 



Evaporation: 



Daily mean, 1887-88, fs (inch) 



Total annual, 1887-88 (inches) 



Moisture ratios: 



Normal P/E, fs 



Normal tt/E, fs 



Normal P/E, year 



Vapor pressure: 



Normal mean, fs (hundredths inch) 



Humidity : 



Normal mean, fs (per cent) , 



Normal mean, year (per cent) 



Wind: 



Normal mean hourly velocity, fs (miles) 



Sunshine: 



Normal total duration, fs (hours) 



Moisture-temperature indices: 



Normal P/E X T, fs, remainder method 



Normal P/E X T, fs, exponential method 



Normal P/E XT, fs, physiological method 



Loiv. 



25 



32 

 



10.0 



2.8 



2.9 



3.1 



-48 



25 



64.4- 



50- 



.009 







127 



96 





 127 







183 



4,0" 



1 



.04 

 .00 

 .03 



183 



22.6 

 29.7 



4.5 



,870 



13 



127 



197 



High. 

 305 

 211 

 102 



26.0 



10.0 



11.8 



20.6 

 +23 



54 



78.8 + 



70 + 



.073 



8 

 283 

 100 



10 

 283 



30 



.349 



-10 



.23 

 .27 

 .44 



450" 



54.6 

 64.8 



10.2 



2,100" 



300" 

 3,000" 

 7,000" 



Table 24. — Climatic extremes for the semidesert. 



Plate 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 43 

 44 

 45 



46 

 47 

 48 

 49 

 50 

 51 

 52 



Temperature: 



Days in normal frostless season fs 



Hot days, fs 



Cold days, fs 



Remainder summation above 32°, year (thousands) . . . 



Remainder summation above 39°, fs (thousands) 



Exponential riummation, fs (hundreds) 



Physiological summation, fs (thousands) 



Absolute minimum 



Normal daily mean, coldest 14 days of year (°F.) 



Normal daily mean, hottest 6 weeks of year (°F.) 



Normal dailj' mean, year (°F.) 



Precipitation: 



Normal daily mean, fs (inch) 



Normal No. rainy days (over 0.10 inch), fs 



Normal No. dry days (0.10 inch or less), fs 



Dry days, percentage of total, fs (per cent) 



Days in longest normal rainy period, fs 



Days in longest normal dry period, fs 



Mean total, year (inches) 



Loip 

 197 









 11 



o 



4 

 +o 

 45- 

 f.4.4 



BO- 



. a 



2 



.0 



.1 



.017 







231 



81 







82 

 10 



High. 

 319 

 218 

 



26.0 



10.3 



11.3 



21.4 

 +32 



54 



78.8 + 



70 + 



.078 



62 

 294 

 100 



50 

 299 



30 + " 



