PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-06:28:10
G03     255.5          68.7                3.8 +/-    0.61       4.0 +/-    0.61  0.050 / 0.060
G09     302.6          18.6                4.5 +/-    2.87      10.1 +/-    2.87  0.050 / 0.060
G14     97.9           14.9                4.4 +/-    1.32      10.9 +/-    1.32  0.030 / 0.040
G16     136.8          56.1                6.9 +/-    0.41       8.1 +/-    0.41  0.040 / 0.040
G22     197.7          59.4                5.7 +/-    0.97       6.5 +/-    0.97  0.050 / 0.050
G23     315.5          45.0                4.1 +/-    0.95       5.6 +/-    0.95  0.050 / 0.040
G26     78.3           54.9                5.3 +/-    0.46       6.4 +/-    0.46  0.090 / 0.090
G31     49.9           23.7                2.9 +/-    2.25       5.8 +/-    2.25  0.170 / 0.160