PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-12:13:10
G01     74.4           33.2                2.4 +/-    0.94       3.9 +/-    0.94  0.040 / 0.030
G07     135.5          33.6                5.5 +/-    0.68       8.9 +/-    0.68  0.040 / 0.030
G11     54.9           31.5                3.2 +/-    1.21       5.5 +/-    1.21  0.050 / 0.080
G13     277.9          38.0                5.3 +/-    2.37       8.0 +/-    2.37  0.040 / 0.080
G15     308.6          12.3                3.1 +/-    2.37       8.3 +/-    2.37  0.060 / 0.090
G17     228.6          68.6                6.9 +/-    0.76       7.4 +/-    0.76  0.060 / 0.100
G18     50.9           19.1                3.5 +/-    2.18       7.8 +/-    2.18  0.060 / 0.090
G19     221.8          35.3                6.7 +/-    2.12      10.5 +/-    2.12  0.080 / 0.240
G28     13.4           60.0                5.5 +/-    1.37       6.2 +/-    1.37  0.140 / 0.220
G30     131.7          67.0                6.1 +/-    0.34       6.6 +/-    0.34  0.100 / 0.160