PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-08:42:40
G01     122.9          15.0                5.5 +/-    2.18      13.8 +/-    2.18  0.030 / 0.040
G07     70.5           67.8                4.8 +/-    0.71       5.2 +/-    0.71  0.030 / 0.050
G08     46.2           33.4                3.3 +/-    0.53       5.4 +/-    0.53  0.120 / 0.220
G09     173.8          25.7                5.7 +/-    0.67      10.9 +/-    0.67  0.130 / 0.200
G11     110.6          38.2                5.8 +/-    0.86       8.6 +/-    0.86  0.020 / 0.040
G13     319.4          16.2                1.5 +/-    2.58       3.7 +/-    2.58  0.020 / 0.030
G17     200.0          21.7                6.9 +/-    1.39      14.5 +/-    1.39  0.100 / 0.210
G18     97.1           19.0                5.8 +/-    1.34      13.2 +/-    1.34  0.090 / 0.230
G28     283.4          54.8                5.9 +/-    0.67       7.0 +/-    0.67  0.090 / 0.300
G30     336.9          63.7                3.1 +/-    0.76       3.4 +/-    0.76  0.090 / 0.270