PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-15:12:40
G02     254.8          76.1                6.9 +/-    0.72       7.1 +/-    0.72  0.060 / 0.240
G05     171.6          19.7                8.5 +/-    1.30      19.0 +/-    1.30  0.080 / 0.180
G06     40.0           51.3                6.4 +/-    0.48       7.9 +/-    0.48  0.040 / 0.050
G12     321.6          61.6                7.6 +/-    0.87       8.5 +/-    0.87  0.040 / 0.050
G17     76.5           17.5                6.8 +/-    0.59      15.8 +/-    0.59  0.070 / 0.140
G19     59.6           38.8                6.9 +/-    0.57      10.3 +/-    0.57  0.090 / 0.130
G24     236.3          30.7                9.3 +/-    1.60      16.1 +/-    1.60  0.030 / 0.040
G25     317.4          19.5                5.8 +/-    1.90      13.0 +/-    1.90  0.030 / 0.050