PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-04:58:10
G02     200.7          29.5                6.4 +/-    1.55      11.3 +/-    1.55  0.090 / 0.110
G06     172.1          59.1                8.0 +/-    0.61       9.2 +/-    0.61  0.100 / 0.130
G17     28.6           55.0                3.5 +/-    0.43       4.2 +/-    0.43  0.040 / 0.040
G19     346.5          68.7                4.2 +/-    1.09       4.5 +/-    1.09  0.030 / 0.040
G24     305.6          33.5                2.0 +/-    2.85       3.2 +/-    2.85  0.070 / 0.120
G28     96.1           35.0                6.7 +/-    0.69      10.7 +/-    0.69  0.070 / 0.090