PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-11:27:30
G08     277.6          19.2                6.7 +/-    2.05      15.0 +/-    2.05  0.030 / 0.040
G10     50.4           60.5                6.1 +/-    0.75       6.9 +/-    0.75  0.040 / 0.060
G11     316.0          11.9               -0.7 +/-   12.60      -1.8 +/-   12.60  0.290 / 0.220
G14     253.4          59.8                6.8 +/-    1.03       7.7 +/-    1.03  0.210 / 0.420
G18     315.0          26.2                4.2 +/-    1.07       8.1 +/-    1.07  0.130 / 0.290
G21     153.4          19.9                4.9 +/-    1.96      10.7 +/-    1.96  0.130 / 0.250
G24     42.1           14.0                3.3 +/-    3.83       8.3 +/-    3.83  0.430 / 0.400
G27     235.3          19.2                7.2 +/-    4.55      16.2 +/-    4.55  0.220 / 0.250
G31     178.2          26.3                6.9 +/-    1.99      13.1 +/-    1.99  0.260 / 0.170
G32     324.2          76.0                7.2 +/-    0.33       7.4 +/-    0.33  0.130 / 0.600