PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-02:27:30
G02     28.0           60.0                8.6 +/-    0.53       9.7 +/-    0.53  0.270 / 0.190
G05     146.4          56.5               11.3 +/-    0.46      13.2 +/-    0.46  0.240 / 0.130
G06     50.2           21.2                6.8 +/-    2.23      14.4 +/-    2.23  0.030 / 0.030
G12     214.1          75.1               11.7 +/-    0.65      12.1 +/-    0.65  0.030 / 0.030
G19     94.1           14.9                9.2 +/-    2.02      23.1 +/-    2.02  0.040 / 0.040
G25     306.3          47.6                9.0 +/-    1.27      11.6 +/-    1.27  0.030 / 0.050
G29     302.2          22.5                7.4 +/-    1.55      15.4 +/-    1.55  0.080 / 0.050