PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-08:58:10
G01     232.7          23.0                6.6 +/-    3.15      13.5 +/-    3.15  0.030 / 0.040
G03     303.4          61.5                3.4 +/-    0.88       3.8 +/-    0.88  0.030 / 0.040
G14     77.6           31.7                4.0 +/-    0.83       6.8 +/-    0.83  0.060 / 0.130
G16     150.3          38.0                5.9 +/-    0.96       8.8 +/-    0.96  0.070 / 0.150
G18     208.5          12.9                4.0 +/-    6.51      10.4 +/-    6.51  0.040 / 0.040
G22     238.1          75.4                5.2 +/-    0.71       5.3 +/-    0.71  0.040 / 0.040
G23     302.1          33.2                4.4 +/-    0.92       7.2 +/-    0.92  0.140 / 0.250
G26     108.5          51.3                6.6 +/-    0.54       8.2 +/-    0.54  0.120 / 0.300
G31     43.1           37.4                2.2 +/-    0.48       3.3 +/-    0.48  0.070 / 0.110