PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-16:28:00
G01     292.2          39.7                8.7 +/-    1.23      12.6 +/-    1.23  0.020 / 0.030
G03     312.1          19.0                9.0 +/-    1.40      20.2 +/-    1.40  0.030 / 0.030
G10     118.9          29.9               10.1 +/-    0.89      17.8 +/-    0.89  0.040 / 0.110
G11     269.3          25.9                9.8 +/-    1.70      18.7 +/-    1.70  0.050 / 0.110
G14     20.0           60.3                9.6 +/-    0.57      10.9 +/-    0.57  0.090 / 0.100
G22     313.9          39.0                7.1 +/-    2.39      10.5 +/-    2.39  0.090 / 0.130
G25     68.5           19.1                9.6 +/-    0.91      21.5 +/-    0.91  0.050 / 0.070
G26     156.7          12.7               12.7 +/-    1.88      33.4 +/-    1.88  0.050 / 0.070
G31     130.3          78.5               10.9 +/-    0.59      11.1 +/-    0.59  0.060 / 0.080
G32     50.7           42.1                7.9 +/-    0.44      11.1 +/-    0.44  0.050 / 0.090