PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-20:12:50
G01     67.5           32.5               13.5 +/-    0.94      22.5 +/-    0.94  0.090 / 0.370
G07     139.1          28.8               16.0 +/-    1.15      28.7 +/-    1.15  0.080 / 0.360
G11     52.4           29.6               12.6 +/-    1.75      22.2 +/-    1.75  0.040 / 0.090
G13     271.1          37.0               15.5 +/-    1.21      23.7 +/-    1.21  0.040 / 0.080
G15     300.3          15.6                8.3 +/-    1.80      20.2 +/-    1.80  0.070 / 0.160
G17     237.0          67.8               16.1 +/-    1.09      17.2 +/-    1.09  0.060 / 0.150
G18     47.2           17.0               11.2 +/-    1.08      26.5 +/-    1.08  0.030 / 0.060
G19     226.4          43.3               17.6 +/-    1.51      24.3 +/-    1.51  0.030 / 0.070
G28     25.1           58.5               13.6 +/-    0.43      15.7 +/-    0.43  0.130 / 0.240
G30     138.2          57.9               15.1 +/-    0.80      17.5 +/-    0.80  0.100 / 0.370