PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-11:57:20
G02     205.6          39.2                6.3 +/-    2.27       9.3 +/-    2.27  0.070 / 0.080
G06     142.4          74.9                5.6 +/-    0.55       5.8 +/-    0.55  0.070 / 0.070
G12     310.3          20.8                4.2 +/-    3.78       9.0 +/-    3.78  0.100 / 0.230
G17     39.5           46.3                3.5 +/-    0.69       4.7 +/-    0.69  0.100 / 0.180
G19     15.9           60.6                4.2 +/-    0.50       4.7 +/-    0.50  0.030 / 0.030
G24     292.3          39.4                3.1 +/-    1.16       4.5 +/-    1.16  0.030 / 0.030
G28     104.3          33.8                5.3 +/-    0.43       8.7 +/-    0.43  0.040 / 0.040