= Accessable Northern Latitudes =

Server sky is theoretically visible from 60° north latitude;  however, that places it on the horizon
elevation zero degrees, with hundreds of kilometers of attenuating atmosphere between the ground receiver and space.

Assuming 70 GHz, with  0.7 dB/km attenuation and a density lapse rate of 1/7km, the attenuation due south versus
latitude is:

|| lat ||  elev || dist to ||ss angl||  attn || relative ||
|| deg ||  deg  || ss   km ||  deg  ||    dB ||    loss  ||
||   0 || 90.00 ||  6418.0 ||  0.00 ||  4.90 ||     1.00 ||
||   5 || 80.07 ||  6466.1 ||  4.93 ||  4.97 ||     1.02 ||
||  10 || 70.36 ||  6608.1 ||  9.64 ||  5.20 ||     1.07 ||
||  15 || 61.04 ||  6836.9 || 13.96 ||  5.60 ||     1.17 ||
||  20 || 52.24 ||  7142.7 || 17.76 ||  6.19 ||     1.35 ||
||  25 || 44.00 ||  7513.9 || 21.00 ||  7.05 ||     1.64 ||
||  30 || 36.34 ||  7938.7 || 23.65 ||  8.25 ||     2.16 ||
||  35 || 29.23 ||  8406.0 || 25.77 || 10.00 ||     3.24 ||
||  40 || 22.62 ||  8905.9 || 27.38 || 12.66 ||     5.97 ||
||  45 || 16.46 ||  9429.7 || 28.54 || 17.08 ||    16.53 ||
||  50 || 10.69 ||  9970.0 || 29.31 || 25.67 ||   119.29 ||
||  55 ||  5.26 || 10520.4 || 29.74 || 48.26 || 21654.10 ||
||  60 ||  0.12 || 11075.6 || 29.88 || 76.25 ||  &inf;   ||

== Places ==
see [[Cities]]