PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/30-15:28:10
G02     215.1          54.7                9.6 +/-    0.83      11.5 +/-    0.83  0.050 / 0.060
G06     60.0           73.6                9.6 +/-    0.37      10.0 +/-    0.37  0.080 / 0.080
G12     319.6          39.3                6.4 +/-    0.85       9.4 +/-    0.85  0.050 / 0.070
G17     56.9           31.8                6.8 +/-    2.11      11.4 +/-    2.11  0.050 / 0.070
G19     32.0           53.4                7.8 +/-    1.15       9.5 +/-    1.15  0.030 / 0.020
G24     265.6          42.5                9.6 +/-    1.88      13.5 +/-    1.88  0.030 / 0.030
G28     121.0          15.5                8.0 +/-    1.43      19.6 +/-    1.43  0.050 / 0.030