PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-23:13:10
G02     58.1           34.1                9.1 +/-    0.89      14.6 +/-    0.89  0.130 / 0.300
G05     59.6           61.7                9.3 +/-    1.29      10.4 +/-    1.29  0.140 / 0.390
G12     183.3          32.2               12.2 +/-    1.71      20.4 +/-    1.71  0.030 / 0.040
G13     129.1          14.3               11.7 +/-    2.45      29.7 +/-    2.45  0.030 / 0.040
G15     165.7          10.4               -5.4 +/-   27.08     -15.1 +/-   27.08  0.050 / 0.100
G21     270.0          15.8               11.8 +/-    2.44      28.9 +/-    2.44  0.090 / 0.130
G25     238.8          52.8                9.8 +/-    0.99      11.9 +/-    0.99  0.050 / 0.060
G29     326.6          52.2                9.3 +/-    0.81      11.4 +/-    0.81  0.060 / 0.070