PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-21:42:50
G01     110.6          23.7               10.4 +/-    2.17      20.9 +/-    2.17  0.090 / 0.210
G07     100.4          61.3               10.4 +/-    0.72      11.7 +/-    0.72  0.110 / 0.180
G08     43.1           27.3                7.9 +/-    1.45      14.7 +/-    1.45  0.040 / 0.050
G09     176.2          17.7               12.7 +/-    2.74      29.6 +/-    2.74  0.040 / 0.060
G11     97.1           42.9               10.3 +/-    0.62      14.4 +/-    0.62  0.060 / 0.120
G13     312.6          25.9               11.5 +/-    2.19      22.0 +/-    2.19  0.060 / 0.110
G17     205.6          30.8               12.1 +/-    1.60      20.8 +/-    1.60  0.040 / 0.080
G18     84.9           23.7                9.1 +/-    0.46      18.3 +/-    0.46  0.040 / 0.080
G28     311.8          60.4                9.9 +/-    0.90      11.2 +/-    0.90  0.090 / 0.220
G30     21.4           76.8               10.5 +/-    0.80      10.8 +/-    0.80  0.070 / 0.210