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               12.2 +/-    2.74      24.6 +/-    2.74  0.080 / 0.180
G07     100.4          61.3               12.3 +/-    0.80      13.8 +/-    0.80  0.050 / 0.100
G08     43.1           27.3                8.0 +/-    1.73      14.9 +/-    1.73  0.030 / 0.030
G09     176.2          17.7               13.5 +/-    0.92      31.5 +/-    0.92  0.030 / 0.030
G11     97.1           42.9               12.1 +/-    0.48      16.8 +/-    0.48  0.090 / 0.130
G13     312.6          25.9                9.7 +/-    1.66      18.6 +/-    1.66  0.100 / 0.170
G17     205.6          30.8               12.4 +/-    1.61      21.4 +/-    1.61  0.030 / 0.040
G18     84.9           23.7                9.8 +/-    1.93      19.7 +/-    1.93  0.030 / 0.040
G28     311.8          60.4                9.9 +/-    0.90      11.2 +/-    0.90  0.070 / 0.050
G30     21.4           76.8               11.4 +/-    0.86      11.7 +/-    0.86  0.030 / 0.050