PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/06-11:57:50
G01     129.2          9.8               -18.7 +/-   11.85     -52.2 +/-   11.85  0.040 / 0.030
G07     44.0           69.7                4.4 +/-    0.82       4.7 +/-    0.82  0.040 / 0.030
G08     51.9           40.5                3.3 +/-    1.13       4.8 +/-    1.13  0.030 / 0.020
G09     176.7          37.1                4.5 +/-    1.03       6.8 +/-    1.03  0.030 / 0.030
G11     120.1          33.8                4.7 +/-    1.12       7.6 +/-    1.12  0.300 / 0.340
G17     199.3          12.9                2.0 +/-    2.72       5.3 +/-    2.72  0.110 / 0.280
G18     105.9          15.2                3.9 +/-    2.13       9.5 +/-    2.13  0.080 / 0.250
G27     37.6           9.7                 2.3 +/-    3.94       6.4 +/-    3.94  0.160 / 0.270
G28     271.6          51.2                5.6 +/-    3.28       6.9 +/-    3.28  0.170 / 0.300
G30     328.1          57.0                4.4 +/-    0.48       5.2 +/-    0.48  0.070 / 0.070