PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-19:57:50
G02     28.8           58.8                9.6 +/-    0.48      11.0 +/-    0.48  0.030 / 0.040
G05     143.1          60.2               12.0 +/-    0.80      13.7 +/-    0.80  0.030 / 0.040
G06     53.1           15.8                7.0 +/-    1.76      17.2 +/-    1.76  0.030 / 0.040
G12     193.0          67.7               11.1 +/-    0.87      11.9 +/-    0.87  0.040 / 0.070
G19     97.2           13.7                9.6 +/-    1.43      24.7 +/-    1.43  0.040 / 0.070
G25     299.6          52.5               10.2 +/-    0.39      12.5 +/-    0.39  0.050 / 0.060
G29     305.1          25.1               10.4 +/-    3.12      20.3 +/-    3.12  0.030 / 0.050