PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-20:12:30
G02     35.3           53.6               10.0 +/-    0.53      12.1 +/-    0.53  0.040 / 0.040
G05     130.5          65.5               11.2 +/-    0.76      12.1 +/-    0.76  0.040 / 0.050
G06     56.8           10.9                7.9 +/-    1.29      21.5 +/-    1.29  0.040 / 0.080
G12     188.4          60.1               13.9 +/-    1.01      15.8 +/-    1.01  0.040 / 0.050
G25     289.1          56.4               10.9 +/-    1.39      12.8 +/-    1.39  0.040 / 0.070
G29     309.7          30.1                9.6 +/-    1.23      16.8 +/-    1.23  0.040 / 0.050