PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-13:12:50
G01     71.2           32.9                5.0 +/-    1.04       8.2 +/-    1.04  0.030 / 0.030
G07     137.2          31.2                5.1 +/-    1.18       8.7 +/-    1.18  0.030 / 0.030
G11     53.1           29.9                5.0 +/-    1.77       8.7 +/-    1.77  0.050 / 0.080
G13     274.5          37.8                4.3 +/-    1.96       6.5 +/-    1.96  0.060 / 0.110
G15     306.0          13.3                2.3 +/-    1.27       5.9 +/-    1.27  0.060 / 0.070
G17     233.3          70.4                5.2 +/-    0.56       5.5 +/-    0.56  0.050 / 0.080
G18     48.8           17.9                5.6 +/-    3.23      13.0 +/-    3.23  0.060 / 0.130
G19     223.7          38.1                3.8 +/-    1.94       5.7 +/-    1.94  0.060 / 0.090
G28     18.5           59.4                5.1 +/-    0.99       5.8 +/-    0.99  0.090 / 0.190
G30     135.2          64.0                5.6 +/-    0.45       6.1 +/-    0.45  0.120 / 0.230