PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-22:27:50
G01     250.6          35.0               11.3 +/-    1.87      17.9 +/-    1.87  0.040 / 0.030
G03     315.8          43.9                7.5 +/-    0.79      10.3 +/-    0.79  0.030 / 0.030
G11     237.2          12.6               11.6 +/-    4.07      30.6 +/-    4.07  0.040 / 0.020
G14     61.1           40.3                6.7 +/-    1.36       9.7 +/-    1.36  0.030 / 0.030
G22     304.7          65.7                9.2 +/-    0.59      10.0 +/-    0.59  0.090 / 0.300
G23     286.6          18.9                9.1 +/-    1.90      20.7 +/-    1.90  0.050 / 0.180
G25     39.2           9.7                 6.3 +/-    1.88      17.7 +/-    1.88  0.070 / 0.090
G26     138.5          37.6               12.2 +/-    0.88      18.4 +/-    0.88  0.070 / 0.070
G31     40.2           60.4                8.4 +/-    0.46       9.5 +/-    0.46  0.080 / 0.090
G32     77.3           23.5                7.6 +/-    2.12      15.3 +/-    2.12  0.100 / 0.100