PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-02:27:50
G02     228.0          71.0                7.5 +/-    0.48       7.9 +/-    0.48  0.060 / 0.070
G05     173.7          11.0               -3.0 +/-   16.99      -8.2 +/-   16.99  0.050 / 0.080
G06     44.0           70.6                5.5 +/-    0.74       5.8 +/-    0.74  0.040 / 0.050
G12     320.1          42.7                6.0 +/-    0.52       8.3 +/-    0.52  0.040 / 0.050
G17     66.1           24.7                5.4 +/-    2.58      10.6 +/-    2.58  0.050 / 0.040
G19     49.6           43.0                5.0 +/-    1.63       7.0 +/-    1.63  0.060 / 0.050
G24     250.0          38.1                7.6 +/-    2.20      11.5 +/-    2.20  0.160 / 0.360