PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/06-09:27:50
G01     113.1          21.9                6.1 +/-    0.57      12.8 +/-    0.57  0.090 / 0.230
G07     97.0           61.0                6.4 +/-    1.00       7.2 +/-    1.00  0.100 / 0.240
G08     42.7           24.3                3.7 +/-    1.42       7.3 +/-    1.42  0.040 / 0.050
G09     175.1          18.6                6.6 +/-    1.38      15.1 +/-    1.38  0.020 / 0.040
G11     96.5           40.7                7.4 +/-    0.37      10.7 +/-    0.37  0.060 / 0.070
G13     315.3          22.6                2.1 +/-    1.17       4.3 +/-    1.17  0.040 / 0.070
G17     202.9          33.5                8.5 +/-    0.69      13.8 +/-    0.69  0.050 / 0.100
G28     306.1          59.6                5.1 +/-    1.01       5.8 +/-    1.01  0.060 / 0.120
G30     358.6          73.1                5.4 +/-    0.84       5.7 +/-    0.84  0.110 / 0.190