PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-07:28:10
G01     84.2           31.7                4.0 +/-    1.09       6.8 +/-    1.09  0.030 / 0.030
G07     128.1          41.8                6.0 +/-    0.69       8.5 +/-    0.69  0.030 / 0.020
G11     66.5           40.9                4.3 +/-    0.92       6.2 +/-    0.92  0.220 / 0.490
G13     289.6          38.2               -0.2 +/-    2.36      -0.3 +/-    2.36  0.310 / 0.440
G15     312.2          11.9                1.9 +/-    2.20       5.1 +/-    2.20  0.040 / 0.050
G17     215.7          55.9                7.3 +/-    0.86       8.6 +/-    0.86  0.050 / 0.060
G19     215.0          32.3                5.0 +/-    1.45       8.4 +/-    1.45  0.050 / 0.050
G28     338.2          61.3                3.2 +/-    0.67       3.6 +/-    0.67  0.050 / 0.050
G30     110.8          76.7                5.2 +/-    0.88       5.3 +/-    0.88  0.060 / 0.090