PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-15:27:50
G01     68.9           32.7                8.8 +/-    1.11      14.6 +/-    1.11  0.030 / 0.020
G07     138.3          29.6               10.1 +/-    0.94      17.8 +/-    0.94  0.030 / 0.030
G11     52.3           29.2                8.0 +/-    1.24      14.2 +/-    1.24  0.070 / 0.080
G13     272.2          37.4                9.3 +/-    3.36      14.1 +/-    3.36  0.070 / 0.110
G15     303.4          14.3                6.4 +/-    1.30      16.2 +/-    1.30  0.070 / 0.120
G17     236.4          70.4               11.2 +/-    0.65      11.8 +/-    0.65  0.050 / 0.100
G18     47.6           17.2                7.6 +/-    2.58      17.8 +/-    2.58  0.130 / 0.190
G19     225.2          40.5               10.9 +/-    1.53      15.7 +/-    1.53  0.200 / 0.190
G28     22.1           59.0               10.5 +/-    2.11      12.1 +/-    2.11  0.050 / 0.070
G30     137.2          61.2               10.4 +/-    0.45      11.6 +/-    0.45  0.060 / 0.080