PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-08:27:50
G01     59.7           30.3                4.8 +/-    1.51       8.4 +/-    1.51  0.030 / 0.040
G06     182.3          12.8                5.4 +/-    2.97      14.2 +/-    2.97  0.030 / 0.040
G07     142.3          21.0                8.3 +/-    2.09      17.9 +/-    2.09  0.070 / 0.140
G11     48.1           22.9                3.3 +/-    1.80       6.8 +/-    1.80  0.120 / 0.120
G13     264.0          34.8                7.3 +/-    1.99      11.6 +/-    1.99  0.030 / 0.020
G15     293.5          16.6                3.1 +/-    1.20       7.3 +/-    1.20  0.030 / 0.020
G17     266.0          78.0                7.8 +/-    0.39       7.9 +/-    0.39  0.100 / 0.210
G19     233.6          52.7                7.6 +/-    2.13       9.3 +/-    2.13  0.110 / 0.250
G28     37.4           56.2                7.0 +/-    0.65       8.2 +/-    0.65  0.050 / 0.080
G30     143.4          51.5                9.2 +/-    0.69      11.4 +/-    0.69  0.050 / 0.080