PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-10:57:40
G01     98.2           29.5                6.8 +/-    1.30      12.0 +/-    1.30  0.030 / 0.020
G07     118.6          50.9                6.9 +/-    0.34       8.6 +/-    0.34  0.030 / 0.030
G08     41.7           11.7                3.0 +/-    2.02       8.2 +/-    2.02  0.080 / 0.110
G11     75.8           41.5                5.5 +/-    1.59       7.9 +/-    1.59  0.070 / 0.130
G13     301.8          33.6                2.7 +/-    2.07       4.4 +/-    2.07  0.050 / 0.130
G17     209.5          48.0                7.5 +/-    0.49       9.8 +/-    0.49  0.050 / 0.130
G18     69.9           24.3                5.6 +/-    1.17      11.1 +/-    1.17  0.030 / 0.040
G19     212.3          16.6                5.2 +/-    1.85      12.5 +/-    1.85  0.030 / 0.040
G28     333.3          61.7                5.1 +/-    0.59       5.7 +/-    0.59  0.080 / 0.120
G30     63.3           80.4                6.7 +/-    1.26       6.8 +/-    1.26  0.070 / 0.130