PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-19:58:10
G01     44.4           20.6                6.9 +/-    1.78      14.9 +/-    1.78  0.050 / 0.060
G06     177.3          30.3               14.4 +/-    1.59      25.0 +/-    1.59  0.050 / 0.060
G13     242.5          26.8               14.2 +/-    1.27      26.7 +/-    1.27  0.100 / 0.240
G15     276.1          14.3                9.8 +/-    2.41      24.8 +/-    2.41  0.090 / 0.250
G17     344.5          75.5               10.3 +/-    0.69      10.6 +/-    0.69  0.100 / 0.250
G19     259.8          65.8                7.8 +/-    0.91       8.5 +/-    0.91  0.080 / 0.210
G24     317.9          14.3                6.8 +/-    1.69      17.3 +/-    1.69  0.050 / 0.050
G28     56.7           53.2                9.1 +/-    0.90      11.1 +/-    0.90  0.040 / 0.040
G30     151.9          32.0               11.8 +/-    0.63      19.8 +/-    0.63  0.100 / 0.210