PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/01-00:42:50
G01     76.5           33.3                6.2 +/-    1.54      10.2 +/-    1.54  0.040 / 0.040
G07     134.5          35.7                8.6 +/-    0.82      13.4 +/-    0.82  0.030 / 0.040
G11     59.8           36.3                5.5 +/-    1.09       8.5 +/-    1.09  0.060 / 0.090
G13     281.5          37.5                7.2 +/-    1.58      10.9 +/-    1.58  0.070 / 0.070
G15     306.1          14.6                3.5 +/-    1.56       8.9 +/-    1.56  0.060 / 0.050
G17     225.9          62.5                7.8 +/-    1.07       8.7 +/-    1.07  0.050 / 0.030
G19     220.9          37.8                8.1 +/-    1.79      12.2 +/-    1.79  0.050 / 0.090
G28     12.2           60.1                5.5 +/-    0.75       6.3 +/-    0.75  0.050 / 0.090
G30     130.0          62.3                8.0 +/-    0.39       8.9 +/-    0.39  0.030 / 0.070