PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-03:12:50
G02     24.6           62.8                9.7 +/-    0.91      10.8 +/-    0.91  0.020 / 0.020
G05     150.4          53.0               11.9 +/-    0.53      14.5 +/-    0.53  0.030 / 0.020
G06     48.4           24.5                8.5 +/-    2.15      16.8 +/-    2.15  0.030 / 0.040
G12     230.1          78.0               10.2 +/-    0.44      10.4 +/-    0.44  0.030 / 0.040
G19     91.1           16.8                8.7 +/-    1.55      20.8 +/-    1.55  0.120 / 0.110
G25     309.6          44.5               11.0 +/-    1.12      14.9 +/-    1.12  0.090 / 0.110
G29     299.7          20.2                9.1 +/-    1.87      19.8 +/-    1.87  0.070 / 0.070