PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-14:43:10
G01     61.6           30.8                8.0 +/-    1.36      13.8 +/-    1.36  0.080 / 0.200
G06     180.6          13.6               13.0 +/-    3.62      33.5 +/-    3.62  0.070 / 0.200
G07     141.2          20.8                6.8 +/-    2.92      14.7 +/-    2.92  0.080 / 0.130
G11     48.2           22.3                6.2 +/-    2.01      12.9 +/-    2.01  0.060 / 0.110
G13     266.9          35.3                9.2 +/-    1.30      14.5 +/-    1.30  0.030 / 0.030
G15     298.0          15.5                6.4 +/-    2.13      15.6 +/-    2.13  0.040 / 0.030
G17     260.0          77.9               10.2 +/-    0.47      10.4 +/-    0.47  0.060 / 0.140
G19     231.6          51.4               12.3 +/-    2.17      15.2 +/-    2.17  0.070 / 0.110
G28     33.4           57.0                8.6 +/-    1.18      10.1 +/-    1.18  0.020 / 0.050
G30     142.1          56.1                8.8 +/-    0.60      10.4 +/-    0.60  0.030 / 0.020