PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-03:27:30
G02     13.9           69.2                1.9 +/-    0.56       2.0 +/-    0.56  0.410 / 0.570
G05     157.4          45.1                3.6 +/-    0.93       4.9 +/-    0.93  0.410 / 0.330
G06     43.4           34.8                2.5 +/-    1.42       3.9 +/-    1.42  0.060 / 0.090
G12     283.6          77.6                2.0 +/-    0.79       2.1 +/-    0.79  0.050 / 0.090
G19     84.5           20.7                2.5 +/-    2.69       5.5 +/-    2.69  0.080 / 0.140
G24     218.6          14.5                4.9 +/-   17.09      12.4 +/-   17.09  0.100 / 0.140
G25     313.1          40.7                1.7 +/-    0.92       2.5 +/-    0.92  0.020 / 0.030
G29     296.5          20.4                1.9 +/-    1.06       4.1 +/-    1.06  0.020 / 0.020