PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-19:57:40
G01     60.5           30.7               11.6 +/-    0.69      20.0 +/-    0.69  0.130 / 0.290
G07     142.2          23.0               14.5 +/-    1.31      29.6 +/-    1.31  0.120 / 0.390
G11     48.8           24.8               10.3 +/-    0.78      20.2 +/-    0.78  0.040 / 0.060
G13     263.1          35.3               13.1 +/-    1.10      20.7 +/-    1.10  0.040 / 0.050
G15     294.6          16.2                9.1 +/-    1.81      22.0 +/-    1.81  0.070 / 0.200
G17     252.2          73.1               14.6 +/-    0.37      15.2 +/-    0.37  0.070 / 0.180
G18     42.8           13.4                8.4 +/-    1.43      21.6 +/-    1.43  0.060 / 0.060
G19     232.1          48.9               13.2 +/-    0.55      16.8 +/-    0.55  0.040 / 0.070
G28     35.6           56.7               11.3 +/-    0.71      13.2 +/-    0.71  0.040 / 0.060
G30     143.3          51.8               13.1 +/-    1.39      16.2 +/-    1.39  0.040 / 0.060