PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-15:42:50
G10     299.5          52.7                6.2 +/-    0.79       7.6 +/-    0.79  0.040 / 0.040
G14     210.2          13.2                7.4 +/-    1.68      19.1 +/-    1.68  0.030 / 0.040
G15     46.1           28.2                3.3 +/-    1.26       6.1 +/-    1.26  0.040 / 0.050
G20     355.3          65.3                5.0 +/-    1.39       5.4 +/-    1.39  0.030 / 0.040
G21     104.7          70.3                6.9 +/-    1.38       7.3 +/-    1.38  0.090 / 0.180
G24     91.8           26.3                7.9 +/-    0.60      15.0 +/-    0.60  0.090 / 0.150
G27     301.7          33.0                6.1 +/-    1.23      10.1 +/-    1.23  0.080 / 0.490
G32     211.1          32.0                6.5 +/-    2.19      11.0 +/-    2.19  0.110 / 0.410