CORRELATION OF DISTRIBUTIONAL FEATURES. 



415 



Table 45. — Climatic extremes for region with 5 to 9 species of evergreen broad-leaved trees 



{West) — Continued. 



Plate 

 53 

 54 



68 

 69 

 60 



63 



65 

 66 



68 



69 



70 

 71 



72 



Evaporation: 



Daily mean, 1887-88, fs (inch) 



Total annual, 1887-88 (inches) 



Moisture ratios: 



Normal P/E, fs 



Normal -k/E, fs 



Normal P/E, year 



Vapor pressure: 



Normal mean, fs (hundredths inch) 



Humidity: 



Nonnal 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 XT, fs, exponential method. . 



Normal P/E XT, fs, physiological method 



Low. 



.171 

 40 -« 



.08 

 .10 

 .15 



279 



48.9 

 48.1 



5.5 



1,700-'' 



68 



625 



1,186 



High. 

 .220 



84.8 



.21 

 .29 

 .37 



348 



87.5 

 86.8 



8.4 



2,700±« 



146 

 1,399 

 2,409 



Table 46. — Climatic extremes for region with 10 to 14 species of evergreen broad-leaved trees 



(East). 



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 



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: 



Nonnal 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 dviration, fs (hours) 



Moisture-temperature indices: 



Normal P/E X T, fs, remainder method 



Normal P/E XT, fs, exponential method 



Normal P/E X T, fs, physiological method 



Low. 

 228 

 147 

 



18.0 + 

 7.3 

 7.7 

 13.5 

 -1 

 45 



78.8 + 

 65- 



.141 



175 



26 



8 



143 



18 



50- 



.130 



38.4 



1.08 

 1.12 

 1.09 



585 



73.2 

 77.3 



5.1 



1,942 



1,014 

 ),385 

 ^,294 



High. 

 328 

 192 

 

 26.0 + 

 9.9 

 11.1 

 19.3 

 +22 

 57 



78.8 + 

 70 + 



.172 

 284 



95 



34 

 235 



37 



60 + 



.146 

 49.6 



1.36 

 1.52 

 1.47 



610 



80.6 

 80.9 



9.9 



2,297 



1,314 

 12,106 

 23,652 



