PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-09:28:10
G01     125.5          12.9                3.5 +/-    1.99       9.1 +/-    1.99  0.040 / 0.040
G07     60.7           68.9                5.1 +/-    0.56       5.5 +/-    0.56  0.040 / 0.040
G08     48.1           36.3                2.7 +/-    0.91       4.2 +/-    0.91  0.040 / 0.040
G09     174.5          29.7                6.3 +/-    0.97      11.1 +/-    0.97  0.040 / 0.040
G11     114.6          36.6                6.5 +/-    1.03      10.0 +/-    1.03  0.130 / 0.430
G13     320.5          13.6                1.2 +/-    1.98       3.1 +/-    1.98  0.120 / 0.310
G17     199.6          18.2                4.4 +/-    0.72      10.0 +/-    0.72  0.070 / 0.060
G18     100.6          17.6                4.9 +/-    1.16      11.4 +/-    1.16  0.060 / 0.070
G28     278.3          53.3                5.0 +/-    0.70       6.0 +/-    0.70  0.050 / 0.070
G30     333.1          61.0                3.1 +/-    0.94       3.4 +/-    0.94  0.040 / 0.070