^ecknical ^lot& 5 - nvlpubs.nist.gov

1 PB151364 ^ecknical ^lot& (%) < (X) ' , ,Washington25, , $I,?5 TablesofMedianHourlyValuesoftheCosineoftheSolarZenithAngle(x)forThirty-fiveLocationsManyparametersoftheloverionosphere,notablyDandEregionmaximumelectrondensitiesandDregionabsorption,varyasasimplefunctionofthecosineofthezenithangle(x) ,therefore, ,includingfourteennewstationsestablishedforIGY(seeTablel). ( , ,Brussels,195^). ,expressedinapaperentitled"Onthecalculationofsolarzenithangle" , (1957-1958)fallsmidwaybetweenthetimesofextremevariationsof5ande, ,midwaybetweenconsecutiveleapyears, "basicequationis?cosX=sincp sin&+coscp cos5 cos(h+e+p)cpislatitude&issolardeclinationhisthehourangleofthemeansunfromnoon,reckonedm^^positivewestwardsgisthecorrectionappliedtohduetotheEquationofTime,reckonedpositivewhenthetruesunisaheadofthemeansun(3isthelocaltimecorrection,reckonedpositivewhenthetimemeridianiswestofthestation.,Sincethevaluesof5andeforthe15thdayofamonthareclosetothemonthlymedianvalues, >GeographicTimePageLat Long Adak,AlaskaN51 5 VWI7636*180 WkAmundsen-Scott(Pole}AntarcticaS9000--- -GCT5 Anchorage,AlaskaN61 Ikwii+953150W6 Bagnio,Philippinesni625E12035120E7 Barrow,AlaskaN7120W156k6150W8 Belvoir,VirginiaN38 UhW770875W9 Bogota,ColombiaNk32w7^1575W10 ByrdBase,AntarcticaS8000W12000120W11 CapeCanaveral,FloridaN282kw803675W12 CapeBallett(Adare)))

2 ,AntarcticaS7225E17055165E13 Chiclayo,PeruS6kQw79^975 WIkChimbote,PeruS90^w783575W15 College-Fairbanks,AlaskaN645^W1^7kQ150W1 6 Coneepcion,ChileS3635w725975W17 Ellsworth,AntarcticaS7T^ ,NewJerseyN^O18W7k1275W19 Godhavn,Green]andN6915W5333^5W20 GrandBahamaIslandN2636w781575W21 Guam,MarianaIslandsN1327 Elkkk5150E22 Buancayo,PeruS1203W752075W23 LaPaz,BoliviaS1629W680375W2kLittleAmeric a,AntarcticaS7817W16215165W25 Maui, ,GreenlandN6l09W^522^5W27 Okinawa,RyukyuIslandsN2619E127^7135E28 Panama,CanalZoneN92kw793k75W29 PuertoRico, ,IcelandN6408W21kl15W31 SanFrancisco,CaliforniaN372kW12210120W32 SanSalvador,BahamaIslandswk05W7^ 's,NewfoundlandNi4-737w52^260w3^Talara,P erusk38w811875w35 Thule,Greenlandwj633W685075w36 WhiteSands,NewMexicoN3218W10630105w37 Wilkes,AntarcticaS6615E11035105E38-1+-LS T00010203 Oil-050607080910111213141516171819202122 23 Adak,Alaska( N, W)Time:180 * * ^ * , * , *.1* , , , (PoleStation),Antarctica( S,--) '+ +.ol+ +.01+ +.ol+l0l+.

3 +.01+ +.01+ + + +. +1+.315 391* +1+.31^.391+.11+ ^ 39^.11+ !+.391+.11+ ^.391+.11+6 311+ + + + + + + + + + + + + + + + ,Alaska( N,l +9-9 W)Time:150 * +. ,Philippines( * N, E)Time:120 ^ ^ ^ ^* , ^91-^1-35^ *+. ^. ^ ^ * ^ ^1.^ ,ioi*. ,Alaska( W)Time:150 * * ^ * * ^ ^ ,Virginia( W)Time:75 *06 37^. ^. *91*.1* *. * * * 73^. * ^.25210 +.85I*.83I*. * * *1* + *.91* * 95**. ^ * 7^ * * +8 511*.1*1* + * * + 735 *. * + *31*. * * * *.01* ,Colombia(1*.5 N, ti)Times75 * , **. * * * ^99.^ * ^.513.^ + ^. ^. ** *. * * * *. * * *91*.1*73.!* * * * * ,Antarctica( S, ^)Time:120 * *- **. **. **. * * * ^ * * *. ^ ^ * ^ ^. **. , ^ ^ *. *1* , *01*. ^ * ^ * * *#019# * *1*.235_12_CapeCanaveral,Florida( N, W)Timet75 + ^. (Mare),Antarctica( S, E)Time:l65 + + + , + * ^ *6 + ,Peru( S,79-8 W)Time:75 , , , , , , , , ,Peru( W)Time:75 + * ^. ^ ,Alaska( W)Time:150 ^ 7^ ^ ^. ,Chile( S, V)Time:75 t*HourlyvaluesofcosXfor15thdayofeachmont hLSTJanFehMarAprMayJunJulAugSepOctNovDec 0001020301* + * * * *.

4 1* * * ^ * ^.^ * * , ^ *. *. *. * ^.891*. * *. *. *1* * ^.801*. * *. ^.5^1.^ ^ *. * *13-35^. * *. * ,Antarctica( S,1* W)Time:1*5 * *. * *. + **.1* * + + * *. + * *1*. *21*. * **3.** * *.11* !* *. * **615.** *.273.** *1* * * * *. * * * *. ,EevJersey(1+ N, ^)Time:75 WHourlyvaluesofcosXfor15thdayofeachmonth LSTJanFehMarAprMayJunJulAugSepOctNovDec0 001020301+ + +.01+ + +1+ + ^ + +3.^ +1+ +. +. + 1* + + + + +. ^. ^ + +.71+ ^ +.1+1+ + +.1+181^ + ^ + ^-7^. ^. + + + + + + + + + + + ,Greenland( W)Time:1+5 + ^. +. + +. ^.^ +. +57-3^ +. ^ + + +. + + + + + +. + + + +. + + +. + + ^7.^19.^ +.09I+ +.31^.19^ ^ + ( N, ^)Time:75^HourlyvaluesofcosXfor15thdayof eachmonthLSTJanFebMarAprMayJunJulAugSepO ctNovDec00010203040506, * ,MariansIslands( N,.lM+.9 E)Time:150 EHourlyvalue$ofcosXfor15thdayofeachmonth LSTJanFebMarAprMayJunJulAugSepOctNovDec0 001020301+ , ). + +3.^35.^37.^ + ,6\ + *+.1+ ^. ^. * ^. 991 ^.99^. ^. +.75^. , + ^. ^ + + +. + ^ + + + + !+. ,Peru( S, ^)Time:75 +.

5 ^ + 5* + ^ !) ^6".9^ +. ^ ^ ,Bolivia( S, w)Time:75 WHourlyvaluesofcos; +. ^ +. +1+ + + + + *75 +.65709 ^ +. + ^ * ^. +9 99^. +.856 933 97^ +13 9^ ^.705 + +. +.630 + + + + + + +20 ^ * +. + ,Antarctica(78 3 S, W)Time:l65 WHourlyvaluesofcosXfor15thdayofeachmonth LSTJanFe" ^5' +. + ^ + +1+ * + + + + +. + + ^ +7-3^ + + ^5.^ ^ + +. + ^ +. +. + + + +J+ + + ^ +.121+. + + +1+. +050607080910111213141516IT181920212223 Maui,TerritoryofHawaii( N, ^)Time:150^ , , , , , , , ,Greenland( N, ti)Time:i+5 ^ ^ + * ^. *M&. *. * * *. + ** +. * *. *. *.1* *. + 1* *.275-397.^ +5131* +. ,Ryukyu( N,127-8 E)Time:135 + 32k +27.$ +81+. + ^ + 9\ +. + + + + ^73 ^.681+.61+ + + ^ ,CanalZone( N, ^)Time:75 WHourlyvaluesofcosXfor15thda; ^ 933 9^ 79^ ^. ^ 3^ * ,WestIndies( N, ^1)Time:60 * ^. ^ *H8.*K) + ^ *+. * * * * * ^. * ** * * *^ *27A55.^ * * ,Iceland( N, W)Time:15 WHourlyvaluer, ^ ^.1* * + *.1* * ^9 55*.

6 1+ 36k * ^ 73^. * +. ^ +. *1* * * * *. ,California(37-^% W)Time:120 WHourlyvaluesofcosXfor15thdayofeachmonth LSTJanFe" ' * ^ ^. !*.1* * *71*. * ,$ ^ ^ *68li*.1* * ^.^ * * * *1+ * *.1* * * * ,BahamaIs.( N, W)Time:75 7^ + ^ ^ 's,Newfoundland( R, W)Time:60 WHourlyvaluesofcosXfor15thdayofeachmonth LSTJanFehMarAprMayJunJulAugSepOctNovDec0 0010203oi+. ^+ ^ ^. * ^. ^ ^ ^.7^ * ,Peru( S, W)Time:75^ 531 + ^. ,Greenland( W)Time:75 ^ ^ ^ * + ^ ^ + ^ ^ ^ +. ^ ,NewMexico( W)Time:105 WHourlyvaluesofcosXfor15thdayofe* 372 ^. ,Antarctica( S, E)Time:105 + *1* * * * *. ,6M*. * * + * * * *. * *. * * *11* * *.01* * *M-NeS-Bl