PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-19:12:50
G01     60.5           30.7               11.3 +/-    0.88      19.5 +/-    0.88  0.120 / 0.430
G07     142.2          23.0               17.5 +/-    1.76      35.9 +/-    1.76  0.110 / 0.420
G11     48.7           24.5               10.8 +/-    0.71      21.3 +/-    0.71  0.070 / 0.170
G13     263.0          35.3               15.5 +/-    1.09      24.5 +/-    1.09  0.060 / 0.150
G15     294.9          16.0               12.7 +/-    2.61      30.7 +/-    2.61  0.040 / 0.050
G17     253.1          73.7               16.0 +/-    0.62      16.6 +/-    0.62  0.050 / 0.050
G18     42.7           13.3                8.6 +/-    1.21      22.3 +/-    1.21  0.050 / 0.050
G19     232.1          48.6               16.7 +/-    1.56      21.4 +/-    1.56  0.060 / 0.070
G28     35.5           56.7               11.5 +/-    0.52      13.5 +/-    0.52  0.040 / 0.040
G30     143.4          52.1               15.4 +/-    1.61      19.0 +/-    1.61  0.030 / 0.040