PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/10-07:27:50
G01     234.0          25.5                4.5 +/-    1.96       8.6 +/-    1.96  0.040 / 0.030
G03     307.4          60.0                4.0 +/-    0.79       4.5 +/-    0.79  0.040 / 0.030
G14     75.1           31.8                3.8 +/-    1.89       6.3 +/-    1.89  0.040 / 0.050
G16     154.7          32.8                3.7 +/-    1.47       6.1 +/-    1.47  0.040 / 0.040
G18     209.3          14.7                3.6 +/-    2.43       9.1 +/-    2.43  0.150 / 0.190
G22     258.7          75.4                4.7 +/-    0.47       4.8 +/-    0.47  0.210 / 0.230
G23     300.6          32.9                2.1 +/-    2.22       3.5 +/-    2.22  0.090 / 0.130
G26     118.1          49.5                4.5 +/-    0.97       5.8 +/-    0.97  0.090 / 0.140
G31     42.3           41.4                1.8 +/-    0.83       2.6 +/-    0.83  0.170 / 0.310
G32     89.3           14.6                3.0 +/-    2.68       7.5 +/-    2.68  0.210 / 0.350