PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/19-20:42:50
G01     286.5          40.8                6.9 +/-    1.47       9.9 +/-    1.47  0.070 / 0.100
G03     313.1          19.9                8.2 +/-    1.79      18.0 +/-    1.79  0.050 / 0.080
G10     122.2          26.7               11.3 +/-    1.40      21.3 +/-    1.40  0.050 / 0.090
G11     262.4          25.2                9.8 +/-    2.42      19.1 +/-    2.42  0.060 / 0.080
G14     29.1           56.7                5.9 +/-    0.84       6.9 +/-    0.84  0.020 / 0.030
G22     314.2          40.8                7.5 +/-    1.95      10.8 +/-    1.95  0.030 / 0.030
G25     63.2           18.8                7.9 +/-    0.55      18.0 +/-    0.55  0.060 / 0.120
G26     156.1          15.1               13.2 +/-    2.69      32.8 +/-    2.69  0.050 / 0.140
G31     119.1          80.6                9.0 +/-    0.83       9.1 +/-    0.83  0.040 / 0.060
G32     53.6           40.4                8.1 +/-    0.30      11.7 +/-    0.30  0.040 / 0.050