PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-08:27:50
G01     233.6          23.8                6.0 +/-    1.93      12.2 +/-    1.93  0.030 / 0.040
G03     304.9          60.3                5.2 +/-    0.89       5.9 +/-    0.89  0.030 / 0.030
G14     76.7           32.2                5.1 +/-    0.69       8.5 +/-    0.69  0.060 / 0.160
G16     151.0          37.0                7.0 +/-    0.92      10.7 +/-    0.92  0.060 / 0.150
G18     209.1          13.6                4.6 +/-    4.39      11.8 +/-    4.39  0.060 / 0.080
G22     244.3          75.7                5.4 +/-    0.46       5.5 +/-    0.46  0.060 / 0.100
G23     301.1          32.2                3.8 +/-    1.27       6.5 +/-    1.27  0.130 / 0.220
G26     110.2          50.9                7.7 +/-    0.62       9.6 +/-    0.62  0.120 / 0.300
G31     42.8           38.3                2.5 +/-    0.67       3.8 +/-    0.67  0.040 / 0.050
G32     92.8           10.2                3.2 +/-    2.84       8.8 +/-    2.84  0.040 / 0.050