PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-11:12:30
G02     65.7           26.1                4.5 +/-    1.24       8.5 +/-    1.24  0.030 / 0.040
G05     51.7           57.3                7.1 +/-    0.69       8.2 +/-    0.69  0.030 / 0.040
G12     181.5          25.2                6.8 +/-    1.43      13.3 +/-    1.43  0.100 / 0.130
G13     121.4          18.9                8.5 +/-    1.93      19.3 +/-    1.93  0.110 / 0.160
G15     157.4          19.2                6.2 +/-    1.86      13.8 +/-    1.86  0.190 / 0.360
G21     277.2          21.7                4.8 +/-    1.74      10.0 +/-    1.74  0.340 / 0.360
G25     227.9          47.4                7.5 +/-    3.62       9.8 +/-    3.62  0.030 / 0.040
G29     332.1          59.4                6.2 +/-    0.72       7.0 +/-    0.72  0.030 / 0.040