. Smithsonian miscellaneous collections. urves, such for instance as subsists with ones right hand andones left. 4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO4 3. The march of the curves differs from month to month, anddiffers for the same month from station to station, yet the right andleft symmetry nearly always prevails. r Vm, \- t*frt>c* /2- 75 /<««*» 1 /e, | a*|/$- / 3 - V - / -/ -7 -7 -y ?-*- : 5- ;- & -/o : -7 f -w -z // -I -4. - i is - T, -II - <? - /^ 11 1. -2. /?V 0 - 2 fc // <- 7 3 -* &-1 -t 0 - 1 -t 07 - 7 - fe / // i~ -? -13 -13 -1 3 -7 - -/?y -M ?/1~) -J /O /3 y \i
. Smithsonian miscellaneous collections. urves, such for instance as subsists with ones right hand andones left. 4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO4 3. The march of the curves differs from month to month, anddiffers for the same month from station to station, yet the right andleft symmetry nearly always prevails. r Vm, \- t*frt>c* /2- 75 /<««*» 1 /e, | a*|/$- / 3 - V - / -/ -7 -7 -y ?-*- : 5- ;- & -/o : -7 f -w -z // -I -4. - i is - T, -II - <? - /^ 11 1. -2. /?V 0 - 2 fc // <- 7 3 -* &-1 -t 0 - 1 -t 07 - 7 - fe / // i~ -? -13 -13 -1 3 -7 - -/?y -M ?/1~) -J /O /3 y \i - 0 ; -/ llm 1 i ;s -A -•/? fo / /a- r -V \i -1 -2 -10 -V V ? /j ? /j y , -b\-1 /S j -- vss-s * ~/ — \ - * « n = -/ - C * Tl -1 -3 2-. Fig. 3.—Mean march for 25 days of departures from normal temperature atWashington in February, years 1924 to 1938, as associated with tips and downsof the solar constant of radiation, years 1938 to 1944, as associated with ups anddowns of critical frequencies of ionization for the layer Fe. Solar change onzero day. 4. The effects are large. Differences of temperature of the orderof io° Fahrenheit, or more, depend on whether a rising or a of solar activity preceded them many days before. 5. The effects of solar changes on temperature persist for many NO. 13 SOLAR VARIATION AND WASHINGTON WEATHER ABBOT 5 days. They may surely be traced from 3 days before to 14 days afterthe zeroth day of the solar sequence. 6. The coefficient of correlation between curves corresponding torising and falling solar activity from —3 to +15 days for Washingtontemperature data of the month February (a fair sample) is —80± 7. Since far-separated cities respond similarly in t
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