PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-03:57:50
G07     37.9           69.4                4.9 +/-    0.44       5.2 +/-    0.44  0.040 / 0.070
G08     54.8           43.3                3.3 +/-    0.48       4.5 +/-    0.48  0.050 / 0.080
G09     179.2          42.2                8.5 +/-    1.08      12.0 +/-    1.08  0.020 / 0.040
G11     124.1          31.4                5.8 +/-    1.11       9.8 +/-    1.11  0.030 / 0.040
G17     199.3          10.8               -3.7 +/-   20.21     -10.3 +/-   20.21  0.050 / 0.050
G23     160.8          13.2                5.5 +/-    2.15      14.2 +/-    2.15  0.040 / 0.050
G27     37.8           10.5                2.1 +/-    4.53       5.9 +/-    4.53  0.180 / 0.260
G28     269.4          50.6                3.8 +/-    0.86       4.8 +/-    0.86  0.150 / 0.330
G30     329.4          57.5                3.9 +/-    0.56       4.5 +/-    0.56  0.280 / 0.310