PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/30-06:28:00
G01     122.8          15.0                2.9 +/-    1.44       7.2 +/-    1.44  0.160 / 0.330
G07     71.8           67.4                4.7 +/-    0.70       5.1 +/-    0.70  0.170 / 0.280
G08     46.0           32.9                2.9 +/-    1.02       4.7 +/-    1.02  0.100 / 0.220
G09     174.4          26.6                4.4 +/-    1.11       8.2 +/-    1.11  0.100 / 0.200
G11     110.2          38.3                6.1 +/-    0.69       9.1 +/-    0.69  0.030 / 0.030
G13     319.3          16.3                3.0 +/-    2.18       7.1 +/-    2.18  0.020 / 0.030
G17     199.8          22.3                3.5 +/-    1.77       7.3 +/-    1.77  0.030 / 0.020
G18     96.3           19.0                4.1 +/-    1.55       9.3 +/-    1.55  0.030 / 0.030
G28     282.9          54.5                5.0 +/-    3.15       6.0 +/-    3.15  0.130 / 0.440
G30     336.8          63.7                3.8 +/-    0.56       4.2 +/-    0.56  0.140 / 0.320