PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-20:12:50
G01     53.7           27.8                9.9 +/-    1.24      18.1 +/-    1.24  0.090 / 0.380
G06     178.1          21.8                6.1 +/-   33.08      12.9 +/-   33.08  0.080 / 0.310
G07     145.0          16.7               14.2 +/-    1.53      34.0 +/-    1.53  0.060 / 0.060
G11     46.1           19.3                9.8 +/-    1.05      22.0 +/-    1.05  0.040 / 0.080
G13     255.1          32.5               12.7 +/-    1.18      21.2 +/-    1.18  0.090 / 0.260
G15     288.1          16.0                8.5 +/-    1.97      20.5 +/-    1.97  0.100 / 0.240
G17     278.0          76.8               13.4 +/-    0.34      13.8 +/-    0.34  0.040 / 0.070
G19     240.1          55.0               14.0 +/-    1.22      16.6 +/-    1.22  0.050 / 0.070
G28     46.6           54.3               12.2 +/-    0.45      14.6 +/-    0.45  0.050 / 0.050
G30     147.5          44.7               13.9 +/-    0.83      18.8 +/-    0.83  0.040 / 0.060