PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-01:57:30
G02     32.4           56.3                8.4 +/-    0.51       9.9 +/-    0.51  0.020 / 0.040
G05     139.5          60.8               10.9 +/-    1.05      12.2 +/-    1.05  0.020 / 0.040
G06     52.8           17.2                6.5 +/-    1.43      15.4 +/-    1.43  0.030 / 0.050
G12     202.1          70.2                9.4 +/-    0.54       9.9 +/-    0.54  0.030 / 0.040
G19     98.0           12.1               10.4 +/-    1.79      27.7 +/-    1.79  0.040 / 0.050
G25     300.8          51.3                9.0 +/-    0.45      11.2 +/-    0.45  0.040 / 0.060
G29     305.5          25.8                9.2 +/-    1.88      17.6 +/-    1.88  0.050 / 0.060