PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/14-07:12:50
G01     233.4          25.1                4.6 +/-    1.90       9.1 +/-    1.90  0.040 / 0.030
G03     306.8          60.4                3.2 +/-    0.97       3.6 +/-    0.97  0.030 / 0.040
G14     75.7           31.5                3.3 +/-    0.66       5.6 +/-    0.66  0.040 / 0.050
G16     154.3          33.4                4.7 +/-    1.24       7.7 +/-    1.24  0.040 / 0.050
G18     209.0          14.2                4.0 +/-    2.06      10.1 +/-    2.06  0.160 / 0.220
G22     256.6          75.4                4.1 +/-    0.87       4.3 +/-    0.87  0.110 / 0.210
G23     301.2          33.6                3.0 +/-    1.11       4.9 +/-    1.11  0.080 / 0.120
G26     117.1          49.9                4.4 +/-    0.84       5.5 +/-    0.84  0.090 / 0.120
G31     42.5           40.8                1.8 +/-    1.38       2.7 +/-    1.38  0.240 / 0.410
G32     89.8           14.1                3.5 +/-    3.96       9.0 +/-    3.96  0.130 / 0.420