PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-09:27:50
G07     31.2           69.3                4.9 +/-    0.47       5.2 +/-    0.47  0.030 / 0.030
G08     56.0           43.6                2.9 +/-    0.80       4.0 +/-    0.80  0.030 / 0.040
G09     175.3          40.1                4.1 +/-    4.95       5.9 +/-    4.95  0.040 / 0.050
G11     124.6          31.0                5.3 +/-    0.53       9.0 +/-    0.53  0.040 / 0.040
G18     109.4          12.8                4.9 +/-    1.63      12.9 +/-    1.63  0.080 / 0.170
G23     160.8          15.4                4.7 +/-    1.83      11.6 +/-    1.83  0.080 / 0.140
G27     39.1           14.2                1.7 +/-    1.11       4.2 +/-    1.11  0.080 / 0.230
G28     264.4          47.9                2.8 +/-    4.80       3.6 +/-    4.80  0.080 / 0.250
G30     323.3          53.1                5.3 +/-    0.67       6.4 +/-    0.67  0.160 / 0.410