PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-21:43:00
G01     101.1          28.4               14.3 +/-    1.40      25.8 +/-    1.40  0.060 / 0.140
G07     114.9          54.2               14.3 +/-    0.32      17.3 +/-    0.32  0.060 / 0.130
G08     42.1           19.5                9.9 +/-    1.94      22.1 +/-    1.94  0.050 / 0.090
G11     83.6           43.3               13.5 +/-    0.63      18.7 +/-    0.63  0.050 / 0.070
G13     305.0          31.6               11.7 +/-    1.27      19.8 +/-    1.27  0.050 / 0.070
G17     209.6          40.0               16.1 +/-    0.74      23.4 +/-    0.74  0.050 / 0.060
G18     74.6           24.9               13.8 +/-    0.92      27.0 +/-    0.92  0.060 / 0.050
G19     210.9          17.8                0.1 +/-   21.17       0.1 +/-   21.17  0.040 / 0.070
G28     330.8          61.7               11.2 +/-    0.88      12.5 +/-    0.88  0.070 / 0.150
G30     68.3           78.6               12.4 +/-    0.93      12.6 +/-    0.93  0.060 / 0.180