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                4.7 +/-    0.97       5.0 +/-    0.97  0.090 / 0.080
G08     54.8           43.3                4.7 +/-    1.17       6.5 +/-    1.17  0.120 / 0.090
G09     179.2          42.2                6.9 +/-    0.77       9.7 +/-    0.77  0.180 / 0.220
G11     124.1          31.4                6.4 +/-    0.79      10.8 +/-    0.79  0.140 / 0.240
G17     199.3          10.8               -6.4 +/-   10.40     -17.5 +/-   10.40  0.040 / 0.040
G23     160.8          13.2                5.5 +/-    2.71      14.3 +/-    2.71  0.040 / 0.040
G27     37.8           10.5                2.7 +/-    2.23       7.5 +/-    2.23  0.050 / 0.050
G28     269.4          50.6                5.3 +/-    2.74       6.6 +/-    2.74  0.080 / 0.070
G30     329.4          57.5                4.3 +/-    0.54       5.0 +/-    0.54  0.020 / 0.030