PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-22:57:30
G02     58.2           34.2                9.2 +/-    2.26      14.9 +/-    2.26  0.060 / 0.080
G05     59.4           61.6                9.4 +/-    0.54      10.5 +/-    0.54  0.090 / 0.080
G12     183.1          31.9               10.8 +/-    1.79      18.1 +/-    1.79  0.200 / 0.470
G13     129.0          14.4               12.4 +/-    2.26      31.4 +/-    2.26  0.150 / 0.320
G15     165.8          10.5               -4.7 +/-   22.92     -13.0 +/-   22.92  0.160 / 0.340
G21     270.1          15.8               12.3 +/-    1.44      29.9 +/-    1.44  0.190 / 0.400
G25     238.4          52.7               10.6 +/-    4.26      12.9 +/-    4.26  0.030 / 0.040
G29     326.7          52.3               11.0 +/-    1.11      13.6 +/-    1.11  0.030 / 0.040