PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-13:43:10
G01     313.5          27.3                3.7 +/-    1.19       6.8 +/-    1.19  0.040 / 0.050
G10     96.3           46.2                6.4 +/-    0.97       8.5 +/-    0.97  0.040 / 0.040
G11     293.9          25.7                3.7 +/-    1.63       7.0 +/-    1.63  0.110 / 0.220
G14     327.2          69.9                4.0 +/-    0.48       4.3 +/-    0.48  0.120 / 0.260
G22     307.0          21.9                5.2 +/-    1.91      11.0 +/-    1.91  0.030 / 0.040
G25     91.3           13.7                8.2 +/-    1.48      21.1 +/-    1.48  0.030 / 0.040
G31     170.4          56.7                8.1 +/-    0.55       9.4 +/-    0.55  0.120 / 0.250
G32     27.9           57.7                4.3 +/-    0.95       5.0 +/-    0.95  0.160 / 0.160