PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-13:42:50
G01     67.8           32.3                6.9 +/-    1.16      11.5 +/-    1.16  0.060 / 0.120
G07     138.6          26.1                8.8 +/-    0.30      16.7 +/-    0.30  0.070 / 0.110
G11     51.3           26.7                5.7 +/-    1.98      10.8 +/-    1.98  0.040 / 0.040
G13     274.0          36.5                8.2 +/-    2.07      12.6 +/-    2.07  0.030 / 0.030
G15     302.5          14.9                2.7 +/-    2.63       6.7 +/-    2.63  0.040 / 0.120
G17     240.9          73.9                7.8 +/-    0.67       8.1 +/-    0.67  0.040 / 0.100
G19     226.3          46.3                9.0 +/-    0.84      11.9 +/-    0.84  0.050 / 0.070
G28     24.2           58.5                6.6 +/-    0.28       7.5 +/-    0.28  0.040 / 0.080
G30     137.1          61.5                8.7 +/-    0.50       9.8 +/-    0.50  0.030 / 0.040