PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-13:57:50
G01     86.7           32.2                4.9 +/-    1.36       8.2 +/-    1.36  0.090 / 0.110
G07     128.1          40.0                7.2 +/-    0.88      10.5 +/-    0.88  0.070 / 0.140
G11     64.1           36.1                7.6 +/-    1.40      11.8 +/-    1.40  0.020 / 0.020
G13     293.6          35.5                9.2 +/-    2.84      14.5 +/-    2.84  0.020 / 0.020
G17     216.4          59.0                7.5 +/-    0.99       8.6 +/-    0.99  0.030 / 0.050
G19     215.7          31.4                7.7 +/-    1.58      13.1 +/-    1.58  0.050 / 0.060
G28     354.7          61.4                6.8 +/-    0.67       7.6 +/-    0.67  0.050 / 0.050
G30     107.1          76.0                7.7 +/-    0.90       7.9 +/-    0.90  0.050 / 0.040