PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-07:58:00
G01     122.7          15.1                7.2 +/-    2.04      18.0 +/-    2.04  0.040 / 0.080
G07     71.3           67.2                6.4 +/-    0.58       6.8 +/-    0.58  0.040 / 0.060
G08     46.6           34.0                3.4 +/-    0.33       5.5 +/-    0.33  0.050 / 0.130
G09     176.9          30.0                8.9 +/-    2.19      15.6 +/-    2.19  0.050 / 0.110
G11     111.2          37.1                8.4 +/-    0.57      12.9 +/-    0.57  0.030 / 0.040
G13     320.3          14.2                1.0 +/-    2.49       2.6 +/-    2.49  0.030 / 0.030
G17     200.2          22.0                5.6 +/-    2.67      11.7 +/-    2.67  0.140 / 0.270
G28     285.8          55.8                6.3 +/-    1.12       7.4 +/-    1.12  0.100 / 0.210
G30     339.5          64.4                4.0 +/-    0.76       4.4 +/-    0.76  0.040 / 0.070