PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-13:27:50
G03     316.5          35.2                5.9 +/-    0.96       9.3 +/-    0.96  0.040 / 0.050
G10     131.4          14.7                9.3 +/-    3.31      23.4 +/-    3.31  0.050 / 0.050
G11     249.8          18.9                6.2 +/-    1.87      14.0 +/-    1.87  0.080 / 0.170
G14     43.2           50.9                6.5 +/-    0.86       8.2 +/-    0.86  0.200 / 0.220
G18     232.5          37.3                8.8 +/-    1.41      13.4 +/-    1.41  0.130 / 0.200
G22     313.3          59.3                6.8 +/-    1.23       7.8 +/-    1.23  0.110 / 0.170
G25     50.4           16.3                6.2 +/-    4.70      14.9 +/-    4.70  0.040 / 0.040
G31     48.9           69.1                7.4 +/-    0.37       7.9 +/-    0.37  0.070 / 0.060
G32     67.6           29.3                7.1 +/-    1.42      12.5 +/-    1.42  0.100 / 0.130