PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-01:58:10
G01     60.0           30.5                4.7 +/-    0.76       8.1 +/-    0.76  0.050 / 0.040
G06     181.5          13.6                6.6 +/-    4.75      16.9 +/-    4.75  0.040 / 0.050
G07     142.4          22.4                7.6 +/-    2.94      15.7 +/-    2.94  0.260 / 0.380
G11     49.5           25.9                3.7 +/-    2.23       7.1 +/-    2.23  0.290 / 0.310
G13     263.4          35.0                6.0 +/-    1.58       9.5 +/-    1.58  0.030 / 0.020
G15     293.0          16.8                3.3 +/-    1.14       7.8 +/-    1.14  0.030 / 0.020
G17     256.7          75.0                6.9 +/-    0.43       7.1 +/-    0.43  0.040 / 0.080
G19     233.1          51.2                6.8 +/-    2.42       8.4 +/-    2.42  0.050 / 0.080
G28     37.0           56.3                7.5 +/-    0.90       8.8 +/-    0.90  0.100 / 0.120
G30     142.8          47.7                7.2 +/-    0.61       9.3 +/-    0.61  0.060 / 0.120