PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-11:12:50
G01     51.5           26.1                4.8 +/-    1.86       9.1 +/-    1.86  0.030 / 0.030
G06     177.1          22.4                9.9 +/-    2.11      20.6 +/-    2.11  0.030 / 0.030
G07     144.6          13.6                5.6 +/-    2.45      14.4 +/-    2.45  0.210 / 0.300
G11     45.6           19.3                4.5 +/-    1.81      10.0 +/-    1.81  0.140 / 0.190
G13     252.4          32.9                6.3 +/-    2.58      10.4 +/-    2.58  0.160 / 0.200
G15     287.5          15.7                3.8 +/-    0.94       9.4 +/-    0.94  0.140 / 0.210
G17     283.5          78.1                6.4 +/-    0.76       6.6 +/-    0.76  0.070 / 0.070
G19     241.6          59.3                5.2 +/-    2.03       6.0 +/-    2.03  0.040 / 0.050
G28     36.5           58.0                4.9 +/-    1.61       5.7 +/-    1.61  0.040 / 0.050
G30     148.7          46.1                9.3 +/-    0.69      12.3 +/-    0.69  0.040 / 0.050