PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-13:27:40
G01     76.5           33.2                6.0 +/-    1.05       9.8 +/-    1.05  0.030 / 0.030
G07     134.4          35.3                6.9 +/-    1.66      10.9 +/-    1.66  0.030 / 0.030
G11     56.5           33.0                4.3 +/-    1.28       7.2 +/-    1.28  0.040 / 0.080
G13     280.3          38.0                5.7 +/-    1.39       8.6 +/-    1.39  0.030 / 0.080
G15     309.5          12.2                3.3 +/-    2.76       8.9 +/-    2.76  0.050 / 0.080
G17     225.9          66.0                8.9 +/-    1.25       9.6 +/-    1.25  0.060 / 0.080
G18     52.5           20.0                5.7 +/-    1.47      12.6 +/-    1.47  0.050 / 0.100
G19     220.8          34.1                7.1 +/-    1.60      11.4 +/-    1.60  0.060 / 0.090
G28     10.4           60.4                3.6 +/-    0.49       4.1 +/-    0.49  0.060 / 0.110
G30     129.3          68.1                4.9 +/-    0.88       5.2 +/-    0.88  0.060 / 0.120