PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-14:12:40
G01     78.3           33.0                7.1 +/-    0.58      11.8 +/-    0.58  0.060 / 0.080
G07     133.2          33.8                6.9 +/-    1.84      11.1 +/-    1.84  0.050 / 0.060
G11     57.6           32.3                6.9 +/-    1.13      11.6 +/-    1.13  0.050 / 0.110
G13     285.1          36.8                7.0 +/-    0.98      10.7 +/-    0.98  0.060 / 0.110
G15     310.4          12.3                4.9 +/-    1.39      13.1 +/-    1.39  0.040 / 0.030
G17     224.1          65.9                9.5 +/-    1.48      10.4 +/-    1.48  0.030 / 0.040
G19     219.7          38.0               10.8 +/-    2.06      16.2 +/-    2.06  0.060 / 0.110
G28     8.1            60.4                6.6 +/-    0.59       7.4 +/-    0.59  0.060 / 0.110
G30     124.7          70.2                7.6 +/-    0.42       8.0 +/-    0.42  0.040 / 0.040