PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-17:12:30
G02     62.4           31.7                6.8 +/-    2.98      11.4 +/-    2.98  0.270 / 0.380
G05     53.5           59.8                7.8 +/-    0.49       8.9 +/-    0.49  0.170 / 0.390
G12     181.9          25.0               10.0 +/-    1.69      19.4 +/-    1.69  0.130 / 0.090
G13     123.2          18.9               11.2 +/-    2.18      25.2 +/-    2.18  0.110 / 0.080
G15     164.5          14.5                9.6 +/-    0.92      24.2 +/-    0.92  0.140 / 0.120
G21     276.1          20.9                8.0 +/-    2.05      17.2 +/-    2.05  0.080 / 0.120
G25     225.2          46.9                9.7 +/-    3.37      12.7 +/-    3.37  0.040 / 0.040
G29     331.8          59.5                7.9 +/-    0.37       9.0 +/-    0.37  0.030 / 0.040