PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/14-00:28:10
G01     56.2           29.0                8.7 +/-    1.70      15.5 +/-    1.70  0.040 / 0.040
G06     180.0          17.8               10.4 +/-    2.58      24.2 +/-    2.58  0.040 / 0.050
G07     144.0          19.1                9.2 +/-    2.11      20.8 +/-    2.11  0.060 / 0.070
G11     47.7           23.0                7.7 +/-    0.95      15.8 +/-    0.95  0.060 / 0.080
G13     258.7          33.6               10.7 +/-    1.41      17.4 +/-    1.41  0.170 / 0.360
G15     289.6          16.6                9.6 +/-    1.28      22.9 +/-    1.28  0.140 / 0.270
G17     267.8          76.0                9.6 +/-    0.80       9.9 +/-    0.80  0.020 / 0.020
G19     237.3          54.1               10.8 +/-    2.22      13.0 +/-    2.22  0.020 / 0.020
G28     42.9           55.1                7.8 +/-    2.09       9.2 +/-    2.09  0.060 / 0.120
G30     145.4          45.1               11.7 +/-    0.93      15.8 +/-    0.93  0.060 / 0.140