PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-11:27:40
G07     331.3          57.3                3.2 +/-    0.46       3.7 +/-    0.46  0.040 / 0.030
G08     103.0          50.0                5.6 +/-    0.69       7.1 +/-    0.69  0.030 / 0.030
G09     189.9          76.6                4.0 +/-    0.64       4.1 +/-    0.64  0.050 / 0.060
G11     146.2          10.4               -3.6 +/-   11.76     -10.1 +/-   11.76  0.040 / 0.060
G16     45.3           12.2                2.2 +/-    3.03       5.7 +/-    3.03  0.100 / 0.120
G23     154.1          48.2                6.9 +/-    0.84       8.9 +/-    0.84  0.090 / 0.110
G27     58.6           32.9                3.9 +/-    1.16       6.5 +/-    1.16  0.030 / 0.040
G28     234.2          26.2              -31.8 +/-   52.86     -60.5 +/-   52.86  0.030 / 0.040
G30     297.2          30.2                4.4 +/-    1.81       7.7 +/-    1.81  0.100 / 0.210