PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-20:42:40
G03     200.6          45.8                9.9 +/-    0.93      13.2 +/-    0.93  0.070 / 0.110
G07     265.7          21.6               10.3 +/-    2.60      21.7 +/-    2.60  0.130 / 0.110
G09     314.9          36.2                8.5 +/-    1.31      13.1 +/-    1.31  0.030 / 0.040
G16     70.1           62.5               10.0 +/-    0.54      11.2 +/-    0.54  0.030 / 0.030
G22     184.3          30.1               10.9 +/-    1.06      19.0 +/-    1.06  0.100 / 0.150
G23     344.2          70.3                7.9 +/-    0.51       8.4 +/-    0.51  0.130 / 0.140
G26     46.6           34.3                8.0 +/-    1.02      12.8 +/-    1.02  0.130 / 0.370
G27     124.9          18.3               12.6 +/-    1.27      28.8 +/-    1.27  0.140 / 0.400