PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/15-12:27:20
G02     25.8           60.8                2.5 +/-    0.67       2.9 +/-    0.67  0.040 / 0.060
G05     152.5          55.6                5.0 +/-    0.76       6.0 +/-    0.76  0.040 / 0.060
G06     50.6           20.5                0.0 +/-    1.07       0.1 +/-    1.07  0.030 / 0.030
G12     207.4          73.6                3.4 +/-    1.46       3.5 +/-    1.46  0.030 / 0.030
G19     94.3           15.5                3.5 +/-    0.99       8.5 +/-    0.99  0.040 / 0.040
G25     300.1          53.9                3.6 +/-    1.41       4.3 +/-    1.41  0.040 / 0.040
G29     303.5          24.4                3.5 +/-    1.04       6.9 +/-    1.04  0.080 / 0.170