PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-11:58:10
G01     38.3           12.1                2.9 +/-    1.26       7.7 +/-    1.26  0.040 / 0.070
G06     172.2          44.0               11.4 +/-    1.40      15.5 +/-    1.40  0.040 / 0.070
G13     233.0          19.9                5.8 +/-    2.15      12.9 +/-    2.15  0.030 / 0.030
G15     268.1          10.6                2.2 +/-    3.58       6.0 +/-    3.58  0.040 / 0.040
G17     3.5            69.1                8.0 +/-    0.35       8.5 +/-    0.35  0.100 / 0.240
G19     294.1          72.0                7.6 +/-    0.80       8.0 +/-    0.80  0.090 / 0.230
G24     315.3          21.2                2.7 +/-    3.72       5.7 +/-    3.72  0.100 / 0.200
G28     69.7           50.3                6.7 +/-    0.37       8.4 +/-    0.37  0.090 / 0.200
G30     156.0          24.9                8.7 +/-    1.77      17.0 +/-    1.77  0.040 / 0.040