PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-16:27:50
G01     300.9          36.7                8.0 +/-    0.93      12.3 +/-    0.93  0.060 / 0.090
G03     309.2          12.9                6.2 +/-   13.56      16.2 +/-   13.56  0.080 / 0.110
G10     112.4          35.6                7.9 +/-    0.76      12.4 +/-    0.76  0.070 / 0.130
G11     277.4          27.1                6.3 +/-    1.48      11.7 +/-    1.48  0.070 / 0.140
G14     7.1            64.2                6.6 +/-    0.50       7.2 +/-    0.50  0.030 / 0.030
G22     312.1          32.4                7.0 +/-    1.28      11.7 +/-    1.28  0.030 / 0.030
G25     76.2           18.3                7.7 +/-    0.83      17.8 +/-    0.83  0.040 / 0.040
G31     156.2          72.4                8.9 +/-    0.98       9.3 +/-    0.98  0.040 / 0.050
G32     43.5           47.3                5.8 +/-    0.54       7.6 +/-    0.54  0.060 / 0.060