PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-02:28:10
G02     55.7           35.5               10.2 +/-    0.92      16.0 +/-    0.92  0.050 / 0.070
G05     65.9           64.0               11.1 +/-    0.31      12.2 +/-    0.31  0.040 / 0.070
G12     185.7          38.3               14.0 +/-    0.64      21.0 +/-    0.64  0.030 / 0.030
G13     132.6          11.5               12.7 +/-    2.81      34.5 +/-    2.81  0.040 / 0.030
G20     216.1          12.9               20.3 +/-    4.93      53.1 +/-    4.93  0.260 / 0.290
G21     266.8          13.6               12.5 +/-    4.24      32.0 +/-    4.24  0.170 / 0.260
G25     247.3          55.2               12.5 +/-    1.54      14.9 +/-    1.54  0.180 / 0.660
G29     324.3          48.7               12.1 +/-    0.53      15.5 +/-    0.53  0.250 / 0.380