PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/04-18:42:40
G08     271.3          20.7                7.5 +/-    2.99      16.1 +/-    2.99  0.030 / 0.030
G10     50.0           60.1                9.2 +/-    0.56      10.4 +/-    0.56  0.030 / 0.030
G11     314.7          14.2                7.1 +/-    1.19      17.9 +/-    1.19  0.200 / 0.340
G14     254.4          62.8                8.7 +/-    0.85       9.6 +/-    0.85  0.230 / 0.340
G20     89.1           40.6               11.1 +/-    0.38      16.0 +/-    0.38  0.110 / 0.400
G21     152.9          18.9               12.2 +/-    2.52      27.6 +/-    2.52  0.110 / 0.410
G24     40.3           10.7                8.5 +/-    2.27      23.3 +/-    2.27  0.090 / 0.120
G27     238.9          20.6               11.1 +/-    1.04      24.0 +/-    1.04  0.090 / 0.130
G31     181.6          21.6               12.5 +/-    2.18      26.5 +/-    2.18  0.050 / 0.060
G32     310.9          76.0                9.7 +/-    0.72      10.0 +/-    0.72  0.050 / 0.060