PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/12-01:58:10
G05     45.9           25.2                8.3 +/-    0.73      16.2 +/-    0.73  0.090 / 0.130
G13     90.1           35.5               13.4 +/-    0.68      21.0 +/-    0.68  0.090 / 0.120
G15     139.4          43.9               15.4 +/-    1.15      21.1 +/-    1.15  0.050 / 0.100
G20     239.9          33.5               14.7 +/-    0.69      24.0 +/-    0.69  0.050 / 0.110
G21     302.6          39.5               11.3 +/-    0.89      16.5 +/-    0.89  0.070 / 0.120
G25     205.4          19.9               13.5 +/-    2.53      29.7 +/-    2.53  0.090 / 0.170
G26     297.2          20.7               10.4 +/-    2.18      22.5 +/-    2.18  0.040 / 0.060
G29     129.9          85.7               12.0 +/-    0.59      12.1 +/-    0.59  0.030 / 0.070