PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-01:27:50
G07     354.1          64.2                3.7 +/-    0.96       4.0 +/-    0.96  0.030 / 0.050
G08     78.4           50.9                4.9 +/-    0.83       6.1 +/-    0.83  0.030 / 0.050
G09     180.2          61.8                7.3 +/-    0.72       8.2 +/-    0.72  0.050 / 0.100
G11     137.8          20.2                7.5 +/-    1.69      16.3 +/-    1.69  0.050 / 0.100
G23     159.1          34.1                7.9 +/-    1.51      12.7 +/-    1.51  0.090 / 0.130
G27     49.0           28.4                2.0 +/-    0.63       3.6 +/-    0.63  0.080 / 0.130
G28     244.4          34.6                6.6 +/-    0.92      10.6 +/-    0.92  0.050 / 0.080
G30     308.7          40.5                4.0 +/-    1.22       5.7 +/-    1.22  0.050 / 0.090