PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-13:57:40
G10     304.0          53.6                3.2 +/-    0.73       3.9 +/-    0.73  0.060 / 0.070
G14     211.9          15.3                3.9 +/-    2.57       9.7 +/-    2.57  0.060 / 0.100
G15     45.5           22.5                2.4 +/-    2.17       5.1 +/-    2.17  0.250 / 0.360
G20     73.2           19.0                3.5 +/-    1.76       7.9 +/-    1.76  0.210 / 0.300
G21     112.8          67.7                5.3 +/-    0.86       5.7 +/-    0.86  0.080 / 0.100
G24     93.2           28.2                5.8 +/-    1.50      10.6 +/-    1.50  0.090 / 0.110
G27     293.7          36.6                6.6 +/-    2.13      10.2 +/-    2.13  0.030 / 0.030
G32     212.9          37.1                5.2 +/-    1.69       8.0 +/-    1.69  0.030 / 0.040