PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-07:42:30
G02     58.4           33.1                1.6 +/-    2.14       2.7 +/-    2.14  0.220 / 0.300
G05     60.8           62.4                4.0 +/-    0.53       4.5 +/-    0.53  0.250 / 0.300
G12     186.5          36.7                5.6 +/-    0.94       8.6 +/-    0.94  0.050 / 0.090
G13     129.0          13.7                5.9 +/-    1.84      15.1 +/-    1.84  0.070 / 0.060
G15     164.6          11.0               -4.1 +/-   12.57     -11.1 +/-   12.57  0.120 / 0.340
G21     271.9          20.4                4.6 +/-    1.71      10.0 +/-    1.71  0.120 / 0.260
G25     234.0          52.9                5.1 +/-    2.69       6.2 +/-    2.69  0.030 / 0.030
G29     330.9          56.4                3.3 +/-    0.52       3.9 +/-    0.52  0.040 / 0.020