PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/12-09:57:40
G01     222.4          14.2                5.8 +/-    2.24      14.6 +/-    2.24  0.170 / 0.470
G03     270.0          71.3                5.0 +/-    0.67       5.2 +/-    0.67  0.240 / 0.390
G14     89.8           21.7                2.2 +/-    1.76       4.7 +/-    1.76  0.030 / 0.050
G16     144.1          47.9                7.3 +/-    0.63       9.5 +/-    0.63  0.030 / 0.040
G22     205.2          66.1                6.0 +/-    0.97       6.5 +/-    0.97  0.040 / 0.040
G23     312.0          42.5                3.6 +/-    1.28       5.0 +/-    1.28  0.050 / 0.050
G26     91.3           54.8                5.6 +/-    0.41       6.6 +/-    0.41  0.110 / 0.280
G31     47.3           27.9                1.7 +/-    1.48       3.0 +/-    1.48  0.120 / 0.290