PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-10:42:40
G02     19.1           65.6                3.5 +/-    0.52       3.8 +/-    0.52  0.080 / 0.130
G05     156.9          49.4                7.9 +/-    1.57      10.1 +/-    1.57  0.110 / 0.170
G06     47.1           26.6                4.6 +/-    1.34       8.7 +/-    1.34  0.040 / 0.040
G12     237.3          79.0                4.5 +/-    0.72       4.6 +/-    0.72  0.040 / 0.050
G19     88.8           19.0                6.5 +/-    1.22      14.7 +/-    1.22  0.030 / 0.030
G25     306.9          49.9                5.2 +/-    1.10       6.6 +/-    1.10  0.030 / 0.040
G29     299.0          20.4                5.5 +/-    2.60      11.9 +/-    2.60  0.080 / 0.230