PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-10:43:10
G01     61.1           30.9                3.5 +/-    1.23       6.0 +/-    1.23  0.080 / 0.130
G07     141.7          22.3                6.2 +/-    2.72      13.0 +/-    2.72  0.090 / 0.120
G11     48.0           23.3                2.8 +/-    2.14       5.7 +/-    2.14  0.040 / 0.030
G13     263.2          35.8                7.1 +/-    1.97      11.2 +/-    1.97  0.040 / 0.030
G15     299.1          14.3                3.0 +/-    2.00       7.6 +/-    2.00  0.090 / 0.110
G17     260.2          77.6                6.7 +/-    0.38       6.8 +/-    0.38  0.070 / 0.110
G18     41.9           12.3                2.3 +/-    1.88       6.2 +/-    1.88  0.060 / 0.100
G19     230.8          45.4                7.8 +/-    1.77      10.4 +/-    1.77  0.040 / 0.080
G28     32.5           57.5                2.6 +/-    1.06       3.0 +/-    1.06  0.210 / 0.230
G30     143.5          55.0                7.2 +/-    0.41       8.6 +/-    0.41  0.080 / 0.190