PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-15:58:10
G01     63.7           31.2                7.5 +/-    0.83      12.8 +/-    0.83  0.090 / 0.140
G07     139.8          21.8                9.8 +/-    0.68      20.7 +/-    0.68  0.100 / 0.150
G11     49.8           27.0                5.6 +/-    1.32      10.5 +/-    1.32  0.050 / 0.060
G13     266.3          37.4               13.2 +/-    1.18      20.1 +/-    1.18  0.060 / 0.060
G15     297.1          16.2               10.3 +/-    3.19      24.9 +/-    3.19  0.080 / 0.200
G17     241.8          71.7               11.2 +/-    0.80      11.8 +/-    0.80  0.070 / 0.210
G18     44.0           14.6                6.3 +/-    1.79      15.9 +/-    1.79  0.050 / 0.100
G19     227.9          48.2               11.8 +/-    0.96      15.2 +/-    0.96  0.050 / 0.100
G28     18.3           60.1                9.9 +/-    0.58      11.2 +/-    0.58  0.030 / 0.050
G30     140.4          54.0                8.7 +/-    0.46      10.4 +/-    0.46  0.040 / 0.040