PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-07:27:50
G01     232.5          24.2                4.8 +/-    2.45       9.5 +/-    2.45  0.040 / 0.040
G03     305.2          61.6                2.8 +/-    0.69       3.1 +/-    0.69  0.030 / 0.040
G14     76.9           30.7                2.0 +/-    1.15       3.5 +/-    1.15  0.060 / 0.040
G16     153.6          34.6                4.7 +/-    1.50       7.5 +/-    1.50  0.060 / 0.050
G18     208.3          13.3                4.2 +/-    2.61      10.9 +/-    2.61  0.210 / 0.240
G22     250.8          75.4                2.9 +/-    0.72       2.9 +/-    0.72  0.290 / 0.270
G23     302.1          34.2                2.3 +/-    1.12       3.8 +/-    1.12  0.090 / 0.110
G26     115.3          50.5                4.1 +/-    0.89       5.1 +/-    0.89  0.070 / 0.130
G31     42.8           39.7                1.7 +/-    1.40       2.5 +/-    1.40  0.220 / 0.410
G32     90.8           13.4                3.8 +/-    2.28       9.9 +/-    2.28  0.140 / 0.480