PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/24-14:27:40
G02     65.7           27.0                5.2 +/-    1.23       9.8 +/-    1.23  0.030 / 0.030
G05     51.6           56.5                7.0 +/-    0.57       8.2 +/-    0.57  0.030 / 0.030
G12     184.9          26.9                8.2 +/-    0.61      15.4 +/-    0.61  0.180 / 0.240
G13     124.3          19.5               11.5 +/-    1.42      25.6 +/-    1.42  0.110 / 0.210
G15     159.2          17.8               11.2 +/-    3.17      26.1 +/-    3.17  0.100 / 0.120
G20     213.3          65.4                8.7 +/-    0.59       9.5 +/-    0.59  0.110 / 0.160
G21     278.2          25.0                6.2 +/-    1.68      12.1 +/-    1.68  0.040 / 0.040
G25     227.2          46.6                7.0 +/-    2.83       9.3 +/-    2.83  0.030 / 0.030
G29     338.8          65.9                5.8 +/-    0.44       6.3 +/-    0.44  0.130 / 0.230