PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-11:57:50
G02     205.6          39.2                5.5 +/-    0.79       8.1 +/-    0.79  0.070 / 0.080
G06     142.4          74.9                5.7 +/-    0.82       5.9 +/-    0.82  0.060 / 0.080
G12     310.3          20.8                2.1 +/-    1.81       4.5 +/-    1.81  0.140 / 0.220
G17     39.5           46.3                4.0 +/-    1.10       5.3 +/-    1.10  0.210 / 0.240
G19     15.9           60.6                4.1 +/-    0.62       4.7 +/-    0.62  0.040 / 0.040
G24     292.3          39.4                3.3 +/-    1.47       4.9 +/-    1.47  0.040 / 0.040
G28     104.3          33.8                5.6 +/-    0.93       9.0 +/-    0.93  0.030 / 0.030