PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-14:12:40
G01     73.7           32.9                7.2 +/-    0.87      11.8 +/-    0.87  0.110 / 0.200
G07     135.7          30.4                9.3 +/-    0.99      16.2 +/-    0.99  0.090 / 0.200
G11     54.6           29.9                7.2 +/-    1.59      12.6 +/-    1.59  0.030 / 0.030
G13     280.3          36.9                6.6 +/-    2.07      10.1 +/-    2.07  0.040 / 0.030
G15     307.2          13.5                4.5 +/-    2.06      11.5 +/-    2.06  0.070 / 0.080
G17     229.9          69.5                9.2 +/-    0.61       9.8 +/-    0.61  0.060 / 0.090
G19     222.3          41.6               10.4 +/-    1.86      14.8 +/-    1.86  0.060 / 0.100
G28     15.1           59.7                8.0 +/-    0.73       9.1 +/-    0.73  0.070 / 0.100
G30     130.9          66.6                9.1 +/-    0.51       9.8 +/-    0.51  0.040 / 0.030