PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/14-13:58:10
G02     40.7           49.0                5.9 +/-    0.93       7.5 +/-    0.93  0.030 / 0.020
G05     127.8          67.1                7.9 +/-    0.66       8.5 +/-    0.66  0.030 / 0.030
G06     57.0           13.8                4.9 +/-    2.57      12.5 +/-    2.57  0.030 / 0.030
G12     195.3          60.7                8.6 +/-    0.42       9.7 +/-    0.42  0.030 / 0.040
G20     200.2          32.4                7.9 +/-    1.12      13.3 +/-    1.12  0.090 / 0.110
G25     283.1          57.7                9.1 +/-    3.40      10.6 +/-    3.40  0.060 / 0.120
G29     315.4          38.5                4.2 +/-    0.93       6.2 +/-    0.93  0.070 / 0.220