PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-05:27:50
G02     203.2          39.1                6.0 +/-    0.74       8.8 +/-    0.74  0.060 / 0.110
G06     164.8          69.5                4.1 +/-    0.43       4.3 +/-    0.43  0.090 / 0.120
G12     308.6          15.8                0.9 +/-    2.46       2.2 +/-    2.46  0.190 / 0.350
G17     37.8           47.9                2.5 +/-    1.58       3.2 +/-    1.58  0.140 / 0.170
G19     8.1            63.4                2.2 +/-    0.56       2.5 +/-    0.56  0.060 / 0.070
G24     296.3          38.5                2.3 +/-    1.87       3.5 +/-    1.87  0.050 / 0.080
G28     105.3          28.9                5.6 +/-    1.37      10.0 +/-    1.37  0.040 / 0.040