PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-14:12:50
G01     53.6           27.4                5.5 +/-    2.13      10.2 +/-    2.13  0.040 / 0.050
G06     178.0          20.1               -8.6 +/-   34.78     -18.9 +/-   34.78  0.050 / 0.050
G07     143.8          14.1                7.3 +/-    1.55      18.5 +/-    1.55  0.170 / 0.390
G11     45.9           19.9                6.0 +/-    2.20      13.2 +/-    2.20  0.140 / 0.300
G13     254.7          33.7                8.0 +/-    0.79      13.0 +/-    0.79  0.030 / 0.020
G15     288.6          16.1                7.1 +/-    1.31      17.1 +/-    1.31  0.030 / 0.030
G17     270.4          76.5                7.6 +/-    0.42       7.7 +/-    0.42  0.100 / 0.100
G19     238.7          57.2                7.4 +/-    2.64       8.6 +/-    2.64  0.090 / 0.100
G28     34.6           58.1                7.6 +/-    0.65       8.8 +/-    0.65  0.100 / 0.260
G30     147.1          46.0                8.2 +/-    0.55      10.9 +/-    0.55  0.100 / 0.210