PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/30-09:58:10
G02     201.1          19.2                3.7 +/-    1.70       8.2 +/-    1.70  0.040 / 0.040
G06     170.3          54.5                5.7 +/-    0.86       6.8 +/-    0.86  0.040 / 0.040
G13     226.5          12.9                1.5 +/-   12.51       3.9 +/-   12.51  0.070 / 0.090
G17     25.4           57.6                4.3 +/-    1.22       5.0 +/-    1.22  0.080 / 0.100
G19     312.5          70.2                3.2 +/-    0.64       3.4 +/-    0.64  0.220 / 0.280
G24     307.5          33.0                3.0 +/-    1.98       4.9 +/-    1.98  0.190 / 0.330
G28     87.4           40.7                4.5 +/-    1.32       6.5 +/-    1.32  0.210 / 0.480
G30     157.8          15.7                3.4 +/-    2.04       8.2 +/-    2.04  0.070 / 0.250