PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-01:42:40
G02     25.8           61.7                9.6 +/-    0.59      10.8 +/-    0.59  0.020 / 0.040
G05     148.6          54.8               12.3 +/-    1.16      14.7 +/-    1.16  0.020 / 0.040
G06     49.4           22.4                7.8 +/-    1.03      16.2 +/-    1.03  0.040 / 0.050
G12     218.9          76.5               10.9 +/-    0.71      11.2 +/-    0.71  0.030 / 0.050
G19     92.5           16.1               10.7 +/-    1.99      25.9 +/-    1.99  0.030 / 0.050
G25     308.0          46.2                9.6 +/-    0.79      12.8 +/-    0.79  0.040 / 0.050
G29     300.8          21.1                9.8 +/-    1.93      20.9 +/-    1.93  0.050 / 0.080