PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-16:57:30
G01     222.0          12.6               10.6 +/-    2.80      27.8 +/-    2.80  0.090 / 0.220
G03     253.0          72.0               12.3 +/-    0.89      12.9 +/-    0.89  0.090 / 0.220
G09     297.6          10.7              -12.9 +/-   15.97     -35.4 +/-   15.97  0.040 / 0.040
G14     91.4           22.3                8.8 +/-    1.83      18.4 +/-    1.83  0.040 / 0.040
G16     139.9          51.5               14.4 +/-    0.57      17.8 +/-    0.57  0.130 / 0.110
G22     198.4          63.2               11.9 +/-    0.43      13.1 +/-    0.43  0.150 / 0.100
G23     314.0          44.3                9.6 +/-    1.05      13.1 +/-    1.05  0.040 / 0.040
G31     48.2           25.6                7.6 +/-    1.92      14.6 +/-    1.92  0.040 / 0.040