PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-11:42:50
G01     60.3           30.6                3.5 +/-    0.90       6.1 +/-    0.90  0.050 / 0.050
G06     179.3          15.7                5.3 +/-    1.86      12.9 +/-    1.86  0.040 / 0.050
G07     142.1          21.8                4.7 +/-    1.26       9.8 +/-    1.26  0.050 / 0.140
G11     47.7           22.8                2.1 +/-    1.20       4.4 +/-    1.20  0.050 / 0.120
G13     262.3          35.5                5.9 +/-    1.10       9.2 +/-    1.10  0.130 / 0.250
G15     299.1          14.0               -0.2 +/-    1.29      -0.6 +/-    1.29  0.140 / 0.300
G17     262.7          77.7                5.0 +/-    0.56       5.1 +/-    0.56  0.140 / 0.310
G18     41.6           12.0                1.6 +/-    1.94       4.2 +/-    1.94  0.180 / 0.280
G28     34.1           57.2                3.5 +/-    0.34       4.1 +/-    0.34  0.040 / 0.050
G30     144.0          54.1                5.6 +/-    1.41       6.8 +/-    1.41  0.040 / 0.060