PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-00:13:00
G10     259.7          33.6                9.9 +/-    1.88      16.1 +/-    1.88  0.120 / 0.280
G13     45.8           23.4                7.1 +/-    2.09      14.5 +/-    2.09  0.130 / 0.290
G15     71.5           55.8                9.4 +/-    0.54      11.1 +/-    0.54  0.040 / 0.040
G16     284.3          14.4                7.6 +/-    1.34      19.2 +/-    1.34  0.040 / 0.040
G20     267.3          36.9               14.8 +/-    2.21      22.8 +/-    2.21  0.190 / 0.370
G21     346.2          66.5                8.8 +/-    0.36       9.5 +/-    0.36  0.210 / 0.350
G24     124.8          10.2               -3.0 +/-   34.79      -8.4 +/-   34.79  0.120 / 0.310
G26     257.2          11.2               12.8 +/-    9.18      34.8 +/-    9.18  0.100 / 0.300
G27     321.3          13.0                5.1 +/-    5.43      13.2 +/-    5.43  0.060 / 0.260
G29     167.4          39.9               10.3 +/-    1.41      15.0 +/-    1.41  0.120 / 0.320