PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-00:42:50
G10     258.5          32.8               11.5 +/-    2.41      19.1 +/-    2.41  0.290 / 0.260
G13     46.6           24.3                8.3 +/-    1.86      16.5 +/-    1.86  0.110 / 0.190
G15     73.2           56.1                9.0 +/-    0.65      10.6 +/-    0.65  0.040 / 0.040
G16     285.6          14.7                7.6 +/-    2.93      19.1 +/-    2.93  0.040 / 0.040
G20     268.5          40.3               14.1 +/-    2.39      20.4 +/-    2.39  0.110 / 0.270
G21     344.3          65.7                9.8 +/-    0.44      10.7 +/-    0.44  0.120 / 0.240
G26     258.3          11.8               12.0 +/-    8.67      32.1 +/-    8.67  0.100 / 0.150
G27     321.6          12.1                0.7 +/-   25.64       1.8 +/-   25.64  0.070 / 0.120
G29     167.2          41.2               10.2 +/-    0.92      14.5 +/-    0.92  0.040 / 0.040