PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-03:42:50
G02     291.0          82.3                3.0 +/-    0.77       3.0 +/-    0.77  0.030 / 0.030
G05     167.4          24.5                5.3 +/-    1.80      10.5 +/-    1.80  0.030 / 0.040
G06     39.7           51.3                2.6 +/-    0.63       3.3 +/-    0.63  0.050 / 0.040
G12     320.1          59.4                3.7 +/-    0.63       4.2 +/-    0.63  0.050 / 0.040
G17     76.6           20.0                2.6 +/-    1.76       5.6 +/-    1.76  0.080 / 0.110
G19     65.3           33.7                2.1 +/-    1.79       3.3 +/-    1.79  0.080 / 0.110
G24     237.6          29.8                6.4 +/-    1.68      11.3 +/-    1.68  0.100 / 0.150
G25     317.7          18.7                2.2 +/-    1.90       5.1 +/-    1.90  0.070 / 0.130