PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-17:42:50
G01     110.4          23.0               11.4 +/-    1.42      23.4 +/-    1.42  0.050 / 0.070
G07     105.0          55.1                9.0 +/-    0.53      10.7 +/-    0.53  0.040 / 0.060
G08     42.3           23.8                6.7 +/-    1.22      13.6 +/-    1.22  0.030 / 0.040
G09     176.3          18.7               13.2 +/-    1.24      29.9 +/-    1.24  0.040 / 0.050
G11     93.1           42.9                9.2 +/-    0.79      12.9 +/-    0.79  0.040 / 0.100
G13     312.2          26.9                8.3 +/-    2.20      15.6 +/-    2.20  0.040 / 0.090
G17     203.6          33.5               14.1 +/-    2.17      23.0 +/-    2.17  0.080 / 0.130
G18     82.8           23.2                6.1 +/-    0.93      12.4 +/-    0.93  0.080 / 0.140
G28     300.9          57.8                8.9 +/-    0.83      10.4 +/-    0.83  0.120 / 0.270
G30     17.9           76.7               10.8 +/-    0.84      11.0 +/-    0.84  0.120 / 0.230