PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/20-23:43:00
G01     315.0          25.2                9.3 +/-    2.80      18.1 +/-    2.80  0.120 / 0.320
G10     92.2           48.6               10.5 +/-    0.47      13.5 +/-    0.47  0.130 / 0.260
G11     293.6          27.3                7.7 +/-    1.46      14.2 +/-    1.46  0.070 / 0.140
G14     330.2          70.8               10.2 +/-    1.27      10.7 +/-    1.27  0.060 / 0.130
G18     109.3          22.2               11.2 +/-    1.42      23.4 +/-    1.42  0.030 / 0.040
G22     304.6          16.2                8.3 +/-    4.13      20.0 +/-    4.13  0.030 / 0.040
G25     91.3           12.4               11.4 +/-    1.74      30.0 +/-    1.74  0.030 / 0.080
G31     177.9          48.7               13.3 +/-    1.18      17.0 +/-    1.18  0.050 / 0.040
G32     17.3           62.8                9.5 +/-    0.66      10.6 +/-    0.66  0.140 / 0.450