PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-11:57:50
G02     210.9          48.8                6.5 +/-    1.66       8.4 +/-    1.66  0.070 / 0.070
G06     92.6           79.2                5.2 +/-    0.71       5.3 +/-    0.71  0.060 / 0.070
G12     315.8          30.1                5.4 +/-    2.14       9.4 +/-    2.14  0.080 / 0.110
G17     51.6           36.0                3.0 +/-    0.45       4.7 +/-    0.45  0.080 / 0.100
G19     22.8           57.4                5.8 +/-    0.48       6.7 +/-    0.48  0.040 / 0.050
G24     272.8          43.7                4.1 +/-    0.99       5.7 +/-    0.99  0.040 / 0.040
G28     116.1          21.1                5.9 +/-    1.31      12.8 +/-    1.31  0.080 / 0.210