PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-21:58:00
G01     96.5           29.7                9.9 +/-    1.20      17.5 +/-    1.20  0.040 / 0.050
G07     120.9          45.5               11.7 +/-    1.20      15.6 +/-    1.20  0.050 / 0.050
G08     41.7           10.9                6.8 +/-    2.58      18.6 +/-    2.58  0.110 / 0.110
G11     73.8           41.3                9.5 +/-    1.29      13.5 +/-    1.29  0.140 / 0.150
G13     300.5          34.5                8.1 +/-    1.11      13.0 +/-    1.11  0.050 / 0.140
G17     209.4          49.3               10.7 +/-    0.64      13.6 +/-    0.64  0.070 / 0.110
G18     66.8           23.4                7.6 +/-    1.46      15.5 +/-    1.46  0.140 / 0.450
G19     211.7          21.5               12.0 +/-    1.72      25.4 +/-    1.72  0.170 / 0.400
G28     329.1          61.2                7.8 +/-    0.57       8.7 +/-    0.57  0.040 / 0.040
G30     80.3           79.0               10.4 +/-    0.64      10.6 +/-    0.64  0.040 / 0.040