PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-12:12:50
G01     46.4           22.6                2.3 +/-    1.84       4.8 +/-    1.84  0.120 / 0.280
G06     175.8          30.8                4.1 +/-    1.85       7.0 +/-    1.85  0.230 / 0.340
G11     43.5           10.1                1.7 +/-    3.14       4.6 +/-    3.14  0.130 / 0.230
G13     245.3          27.8                3.9 +/-    2.28       7.2 +/-    2.28  0.260 / 0.220
G15     284.5          13.5                1.7 +/-    1.81       4.3 +/-    1.81  0.060 / 0.070
G17     342.9          76.1                3.4 +/-    0.36       3.5 +/-    0.36  0.050 / 0.070
G19     250.9          58.8                3.9 +/-    0.98       4.4 +/-    0.98  0.030 / 0.050
G24     318.0          14.2                0.5 +/-    2.45       1.2 +/-    2.45  0.040 / 0.050
G28     58.3           51.6                2.7 +/-    1.07       3.4 +/-    1.07  0.110 / 0.120
G30     152.3          38.1                4.5 +/-    0.91       6.7 +/-    0.91  0.110 / 0.100