PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-02:28:00
G02     228.0          71.0                6.4 +/-    1.09       6.7 +/-    1.09  0.050 / 0.100
G05     173.7          11.0                0.1 +/-   21.09       0.3 +/-   21.09  0.060 / 0.090
G06     44.0           70.6                5.7 +/-    0.54       6.1 +/-    0.54  0.050 / 0.070
G12     320.1          42.7                8.0 +/-    1.10      11.1 +/-    1.10  0.060 / 0.070
G17     66.1           24.7                5.1 +/-    0.73      10.0 +/-    0.73  0.120 / 0.240
G19     49.6           43.0                4.4 +/-    0.56       6.1 +/-    0.56  0.100 / 0.280
G24     250.0          38.1                8.1 +/-    1.19      12.2 +/-    1.19  0.040 / 0.070