PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-23:28:10
G01     76.7           33.3               15.4 +/-    1.61      25.3 +/-    1.61  0.050 / 0.100
G07     134.4          35.9               19.1 +/-    1.06      29.8 +/-    1.06  0.090 / 0.070
G11     59.5           36.0               14.0 +/-    1.50      21.9 +/-    1.50  0.050 / 0.050
G13     281.5          37.5               16.8 +/-    1.55      25.5 +/-    1.55  0.050 / 0.040
G15     306.3          14.5               12.0 +/-    4.25      30.3 +/-    4.25  0.050 / 0.050
G17     225.6          61.3               18.4 +/-    1.74      20.7 +/-    1.74  0.060 / 0.040
G19     220.8          37.3               20.9 +/-    1.75      31.9 +/-    1.75  0.080 / 0.080
G28     11.7           60.2               14.8 +/-    1.06      16.8 +/-    1.06  0.070 / 0.080
G30     129.7          63.3               18.5 +/-    0.63      20.4 +/-    0.63  0.060 / 0.090