PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-12:57:30
G01     93.3           31.0                4.6 +/-    1.19       8.0 +/-    1.19  0.030 / 0.030
G07     123.0          47.7                6.1 +/-    0.82       7.9 +/-    0.82  0.030 / 0.030
G11     70.6           40.1                4.5 +/-    1.19       6.6 +/-    1.19  0.040 / 0.040
G13     297.3          35.3                5.6 +/-    2.64       8.9 +/-    2.64  0.040 / 0.040
G17     212.2          52.1                7.9 +/-    1.01       9.7 +/-    1.01  0.070 / 0.080
G18     66.0           24.0                5.4 +/-    0.74      10.7 +/-    0.74  0.070 / 0.090
G19     213.7          21.4                5.4 +/-    2.49      11.4 +/-    2.49  0.090 / 0.090
G28     343.3          61.9                3.6 +/-    0.68       4.0 +/-    0.68  0.120 / 0.090
G30     88.3           79.1                5.6 +/-    0.68       5.7 +/-    0.68  0.060 / 0.100