PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/08-11:58:00
G01     100.8          27.5                4.3 +/-    1.66       7.9 +/-    1.66  0.050 / 0.060
G07     114.9          51.4                5.4 +/-    0.68       6.7 +/-    0.68  0.070 / 0.050
G08     42.0           19.9                4.0 +/-    2.37       8.9 +/-    2.37  0.030 / 0.050
G11     82.4           43.7                5.8 +/-    0.76       8.0 +/-    0.76  0.040 / 0.050
G13     304.9          32.6                3.4 +/-    2.15       5.6 +/-    2.15  0.050 / 0.090
G17     208.1          38.4                5.9 +/-    1.11       8.8 +/-    1.11  0.050 / 0.080
G18     74.1           24.5                5.3 +/-    1.19      10.6 +/-    1.19  0.190 / 0.230
G19     209.5          18.9               -2.8 +/-    4.00      -6.4 +/-    4.00  0.180 / 0.150
G28     314.4          59.5                4.6 +/-    1.20       5.2 +/-    1.20  0.120 / 0.260
G30     50.1           79.9                6.0 +/-    0.64       6.1 +/-    0.64  0.080 / 0.130