Far East 8.2 million
=
Chukchi 0.1 million
Magadan 0.1
Khabarovsk 1.3
Vladivostok 1.9
Chita 1.1
Mirny, Yakutsk, Evens 1.0 (Yakutsk is by far the most populous of those)

Siberian 17.1
=
Novosibirsk

Urals 12.3
=
YNAO 0.5
Uchaly 3.7
Kurgan 0.9

Northwestern 14
=
Murmansk 0.8
Arkhangelsk 1.2
Nes, Nelmen-Nos 0.1
Petrozavodsk 0.6
Novgorod 0.6
Vologda 1.2

Central 39.4
=
Moscow

(nothing from Volga)

Southern 16.5
=
Rostov 4.2
Adygea 0.5

North Caucasian
=
Stavropol


-----------------------------------


Far East 8.2 million
=
Chukchi 0.1 million/5.5 million = 0.01
Magadan 0.1/5.5 = 0.02
Khabarovsk 1.3/5.5 = 0.24
Vladivostok 1.9/5.5 = 0.35
Chita 1.1/5.5 = 0.2
Mirny, Yakutsk, Evens 1.0/5.5 = 0.18 (Yakutsk is by far the most populous of those)

Siberian 17.1
=
Nobosibirsk

Urals 12.3
=
YNAO 0.5/5.1 = 0.1
Uchaly 3.7/5.1 = 0.72
Kurgan 0.9/5.1 = 0.18

Northwestern 14
=
Murmansk 0.8/4.5=0.18
Arkhangelsk 1.2/4.5=0.27
Nes, Nelmen-Nos 0.1/4.5=0.02
Petrozavodsk 0.6/4.5=0.13
Novgorod 0.6/4.5=0.13
Vologda 1.2/4.5=0.27

Central 39.4
=
Moscow

- (nothing from Volga, which is 29.3)

Southern 16.5
=
Rostov 4.2/4.7=0.89
Adygea 0.5/4.7=0.11

North Caucasian 9.9
=
Stavropol



-------------------------------------


--------------
Far East 8.2
=
Chukchi 0.1/5.5 = 0.01
Magadan 0.1/5.5 = 0.02
Khabarovsk 1.3/5.5 = 0.24
Vladivostok 1.9/5.5 = 0.35
Chita 1.1/5.5 = 0.2
Mirny, Yakutsk, Evens 1.0/5.5 = 0.18 (Yakutsk is by far the most populous of those)

[I had to remove Chukchi and Magadan and bump up the others to account for it]

(0.25*664 ng/dl)+(0.36*516 ng/dl)+(0.21*905 ng/dl)+(0.18*713 ng/dl)
=670 ng/dl
--------------

--------------
Siberian 17.1
=
Nobosibirsk

[just had two numbers from there to average]

( 502 ng/dl + 537 ng/dl )/2
=520 ng/dl
--------------

--------------
Urals 12.3
=
YNAO 0.5/5.1 = 0.1
Uchaly 3.7/5.1 = 0.71
Kurgan 0.9/5.1 = 0.18

(0.1*494)+(0.71*621)+(0.18*754)
=626
-------------

-------------
Northwestern 14
=
Murmansk 0.8/4.5=0.18
Arkhangelsk 1.2/4.5=0.27
Nes, Nelmen-Nos 0.1/4.5=0.02
Petrozavodsk 0.6/4.5=0.13
Novgorod 0.6/4.5=0.13
Vologda 1.2/4.5=0.27

(0.18*593)+(0.27*432)+(0.02*501)+(0.13*506)+(0.13*560)+(0.27*454)
=495
-------------

-------------
Central 39.4
=
Moscow

(502+560+346+507)/4
=479
-------------

-------------
- (nothing from Volga region, which is 29.3)
------------

------------
Southern 16.5
=
Rostov 4.2/4.7=0.89
Adygea 0.5/4.7=0.11

(.89*580)+(0.11*363)
=556
-------------

-------------
North Caucasian 9.9
=
Stavropol
=717
--------------


Russia total population is 146.7 million (minus volga region, it's 117.4)

((670*8.2)+(520*17.1)+(626*12.3)+(495*14)+(479*39.4)+(556*16.5)+(717*9.9))/117.4
=547 ng/dl


"Caucasus Russia" = Southern + North Caucasian
((556*16.5)+(717*9.9))/(16.5+9.9)=616 ng/dl

"Siberian & Far East Russia" = Far East + Siberian + Urals
((670*8.2)+(520*17.1)+(626*12.3))/(8.2+17.1+12.3)=587 ng/dl

"Eastern Europe Russia" = Northwestern + Central (would be +Volga too if I had any data)
((495*14)+(479*39.4))/(14+39.4)=483