PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-16:27:50
G08     312.0          18.3                4.9 +/-    1.47      11.3 +/-    1.47  0.040 / 0.050
G10     324.1          58.8                5.3 +/-    0.54       6.1 +/-    0.54  0.030 / 0.050
G14     215.5          26.9                7.1 +/-    2.20      13.3 +/-    2.20  0.040 / 0.030
G15     46.2           15.5                4.9 +/-    1.10      12.1 +/-    1.10  0.040 / 0.040
G20     28.6           62.1                5.7 +/-    0.46       6.4 +/-    0.46  0.080 / 0.200
G21     129.5          58.2                7.5 +/-    0.90       8.7 +/-    0.90  0.090 / 0.180
G24     74.9           28.3                5.6 +/-    0.59      10.1 +/-    0.59  0.060 / 0.090
G27     284.1          36.8                6.8 +/-    1.31      10.4 +/-    1.31  0.050 / 0.090
G32     219.3          46.7                9.6 +/-    1.54      12.6 +/-    1.54  0.050 / 0.090