PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-01:27:40
G02     31.6           56.9                8.6 +/-    0.53      10.1 +/-    0.53  0.020 / 0.040
G05     140.7          60.3               10.7 +/-    1.09      12.1 +/-    1.09  0.030 / 0.030
G06     52.5           17.5                6.4 +/-    1.34      15.0 +/-    1.34  0.040 / 0.050
G12     202.5          70.6               11.0 +/-    0.52      11.6 +/-    0.52  0.040 / 0.050
G19     97.4           12.6               10.0 +/-    1.77      26.3 +/-    1.77  0.030 / 0.040
G25     301.5          50.9                8.5 +/-    0.76      10.6 +/-    0.76  0.040 / 0.040
G29     305.0          25.2                8.9 +/-    1.57      17.2 +/-    1.57  0.060 / 0.080