PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-08:42:50
G01     103.5          26.0                5.0 +/-    0.73       9.6 +/-    0.73  0.030 / 0.030
G07     110.2          55.3                5.5 +/-    0.38       6.5 +/-    0.38  0.030 / 0.040
G08     42.0           20.9                2.4 +/-    0.53       5.1 +/-    0.53  0.030 / 0.040
G09     173.7          11.6                2.3 +/-    0.88       6.1 +/-    0.88  0.030 / 0.050
G11     88.1           44.5                5.0 +/-    0.78       6.8 +/-    0.78  0.050 / 0.090
G13     307.5          31.0                4.5 +/-    1.14       7.8 +/-    1.14  0.050 / 0.080
G17     206.1          37.5                6.1 +/-    2.64       9.2 +/-    2.64  0.070 / 0.140
G18     77.7           24.5                4.5 +/-    0.79       8.9 +/-    0.79  0.070 / 0.140
G28     307.1          58.2                4.3 +/-    0.91       5.0 +/-    0.91  0.160 / 0.290
G30     21.1           78.8                4.7 +/-    0.56       4.8 +/-    0.56  0.200 / 0.330