468 



CORRELATION OF DISTRIBUTIONAL FEATURES. 

 Table 125. — Climatic extremes for Arundinaria tcda. 



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 



Plate 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 43 

 44 

 45 



46 

 47 

 48 

 49 

 50 

 51 

 62 



Temperature: 



Days in normal frostless season (/«) 



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 5^ear (°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 ir/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 X T, fs, physiological method 



Low. 

 178 

 116 

 



11.5- 

 5.7 

 6.0 

 10.0 

 -15 

 32 

 71.6 

 55 



.109 



120 







8 



72 







50- 



.130 

 31.3 



.64 

 .75 



.85 



488 



69.1 

 70.7 



5.1 



,646 



1 



446 

 ,174 

 ,807 



High. 

 365 

 365 



22 



26.0-1- 



14.5 



.4 

 1 



15. 

 31. 



+41 

 69 



78.8 + 

 75 + 



.173 

 284 



90 



56 

 256 



50 



60 + 



.177 

 56.6 



1.76 

 1.96 

 1.94 



707 



82.7 

 85.2 



13.5 



2.650 



1,418 

 13,511 

 24,265 



Table 126. — Climatic extremes for Dulichium arundinaceum. 



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 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) 



Low. 

 85 









 10.0- 



2.6 



3.0 



2.1 

 -59 





 64.4- 

 35 



.074 



26 

 



11 



21 

 



20 



High. 

 310 

 189 

 149 



18.0 + 

 9.4 



10.3 



18.9 

 +20 



52 



78.8 + 



70- 



,199 



248 

 200 



83 

 256 

 187 



90 



