PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-05:27:40
G02     30.6           58.0                4.0 +/-    1.20       4.7 +/-    1.20  0.020 / 0.040
G05     144.2          58.1                6.1 +/-    0.25       7.0 +/-    0.25  0.020 / 0.030
G06     50.7           21.1                2.1 +/-    3.91       4.4 +/-    3.91  0.030 / 0.030
G12     212.9          73.9                5.0 +/-    0.31       5.2 +/-    0.31  0.040 / 0.030
G19     95.9           13.1                4.3 +/-    1.26      11.2 +/-    1.26  0.220 / 0.150
G20     201.3          14.2                3.4 +/-    4.63       8.6 +/-    4.63  0.160 / 0.180
G25     304.5          49.0                2.1 +/-    5.29       2.7 +/-    5.29  0.170 / 0.420
G29     304.0          24.7                2.5 +/-    0.82       4.9 +/-    0.82  0.190 / 0.340