PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-19:27:50
G01     304.4          35.4                7.3 +/-    1.06      11.5 +/-    1.06  0.080 / 0.130
G10     109.3          37.0                8.6 +/-    0.50      13.1 +/-    0.50  0.070 / 0.100
G11     276.5          28.2                8.5 +/-    0.73      15.5 +/-    0.73  0.050 / 0.070
G14     5.2            65.2                6.1 +/-    0.92       6.6 +/-    0.92  0.050 / 0.080
G18     267.0          51.3                9.0 +/-    0.76      11.2 +/-    0.76  0.050 / 0.060
G20     122.4          11.6                8.8 +/-    1.81      23.7 +/-    1.81  0.040 / 0.050
G22     310.9          28.0                5.7 +/-    1.00      10.5 +/-    1.00  0.090 / 0.150
G25     72.9           15.8               14.7 +/-    1.28      36.0 +/-    1.28  0.100 / 0.150
G31     170.9          65.5                8.8 +/-    0.93       9.6 +/-    0.93  0.060 / 0.120
G32     38.5           51.0                7.0 +/-    0.39       8.7 +/-    0.39  0.070 / 0.140