PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-20:27:40
G02     59.3           33.8                9.3 +/-    1.60      15.1 +/-    1.60  0.040 / 0.040
G05     56.8           60.5               10.8 +/-    0.80      12.2 +/-    0.80  0.030 / 0.040
G12     181.5          28.1               12.2 +/-    1.54      22.2 +/-    1.54  0.130 / 0.210
G13     126.9          16.0               15.2 +/-    2.24      37.0 +/-    2.24  0.180 / 0.220
G15     165.6          11.7               15.2 +/-   22.37      40.9 +/-   22.37  0.120 / 0.080
G21     271.9          17.1               14.1 +/-    1.67      33.2 +/-    1.67  0.070 / 0.090
G25     233.7          50.9               13.2 +/-    3.17      16.4 +/-    3.17  0.100 / 0.140
G29     328.1          54.4                9.8 +/-    1.64      11.7 +/-    1.64  0.070 / 0.120