PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-03:57:50
G01     68.2           32.6                3.4 +/-    1.22       5.7 +/-    1.22  0.030 / 0.040
G07     138.7          28.9                6.9 +/-    0.91      12.4 +/-    0.91  0.040 / 0.050
G11     53.3           30.3                3.9 +/-    1.61       6.8 +/-    1.61  0.120 / 0.270
G13     272.9          36.8                4.7 +/-    2.28       7.2 +/-    2.28  0.190 / 0.230
G15     299.9          16.2                1.7 +/-    2.54       4.0 +/-    2.54  0.030 / 0.030
G17     238.1          70.8                6.4 +/-    0.29       6.8 +/-    0.29  0.030 / 0.030
G19     226.1          45.0                6.7 +/-    2.13       9.0 +/-    2.13  0.060 / 0.090
G28     24.8           58.4                6.1 +/-    1.57       7.0 +/-    1.57  0.100 / 0.100
G30     137.2          56.4                6.2 +/-    0.56       7.3 +/-    0.56  0.040 / 0.070