PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-11:28:10
G02     217.4          63.3                7.6 +/-    0.91       8.4 +/-    0.91  0.110 / 0.500
G06     57.1           76.5                5.1 +/-    0.69       5.2 +/-    0.69  0.130 / 0.470
G12     319.0          36.8                3.7 +/-    1.78       5.6 +/-    1.78  0.070 / 0.090
G17     60.5           29.5                2.7 +/-    0.66       4.8 +/-    0.66  0.030 / 0.070
G19     43.9           46.4                3.4 +/-    0.43       4.5 +/-    0.43  0.050 / 0.090
G24     264.5          40.9                7.1 +/-    0.87      10.1 +/-    0.87  0.040 / 0.070
G28     124.5          11.2                4.3 +/-    2.79      11.8 +/-    2.79  0.060 / 0.080