PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-19:58:10
G01     86.8           32.5               14.4 +/-    0.72      23.9 +/-    0.72  0.130 / 0.410
G07     128.1          43.4               15.4 +/-    0.81      21.3 +/-    0.81  0.150 / 0.310
G11     66.6           39.4               11.8 +/-    0.43      17.3 +/-    0.43  0.060 / 0.110
G13     291.4          36.6               12.5 +/-    0.90      19.3 +/-    0.90  0.060 / 0.120
G15     313.5          11.1                6.9 +/-   23.19      18.8 +/-   23.19  0.040 / 0.070
G17     217.4          52.5               17.2 +/-    1.35      21.0 +/-    1.35  0.050 / 0.080
G18     61.3           23.5               11.0 +/-    1.14      22.3 +/-    1.14  0.050 / 0.050
G19     216.1          28.6               16.4 +/-    2.60      29.5 +/-    2.60  0.050 / 0.050
G28     355.5          61.5               12.7 +/-    1.14      14.3 +/-    1.14  0.060 / 0.100
G30     114.3          72.6               13.8 +/-    0.88      14.4 +/-    0.88  0.050 / 0.100