PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-23:42:50
G02     264.4          80.3               10.3 +/-    0.74      10.4 +/-    0.74  0.030 / 0.030
G05     168.8          21.6               16.1 +/-    2.04      34.0 +/-    2.04  0.030 / 0.030
G06     40.1           52.4               11.4 +/-    0.54      14.0 +/-    0.54  0.120 / 0.210
G12     321.2          57.9               10.2 +/-    0.71      11.8 +/-    0.71  0.130 / 0.170
G17     73.9           21.9               10.6 +/-    1.30      22.3 +/-    1.30  0.120 / 0.130
G19     61.4           36.6                9.9 +/-    0.76      15.3 +/-    0.76  0.110 / 0.130
G24     239.7          31.6               12.3 +/-    1.84      20.9 +/-    1.84  0.350 / 0.320
G25     317.4          16.2                8.6 +/-    1.92      20.8 +/-    1.92  0.260 / 0.340