PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-12:12:50
G01     122.5          15.3                4.6 +/-    2.01      11.4 +/-    2.01  0.060 / 0.040
G07     69.8           68.2                4.3 +/-    1.04       4.6 +/-    1.04  0.030 / 0.040
G08     46.3           33.5                3.4 +/-    0.55       5.6 +/-    0.55  0.120 / 0.160
G09     175.9          28.1                6.3 +/-    1.20      11.5 +/-    1.20  0.100 / 0.190
G11     110.5          38.3                3.8 +/-    0.78       5.6 +/-    0.78  0.040 / 0.050
G13     319.3          16.5                1.1 +/-    1.26       2.6 +/-    1.26  0.040 / 0.060
G17     200.4          21.3                5.9 +/-    1.56      12.5 +/-    1.56  0.040 / 0.040
G18     97.8           19.2                4.1 +/-    0.59       9.1 +/-    0.59  0.020 / 0.040
G28     285.2          55.5                4.1 +/-    1.35       4.8 +/-    1.35  0.040 / 0.110
G30     337.9          64.2                2.3 +/-    0.53       2.5 +/-    0.53  0.040 / 0.080