PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-08:58:00
G01     91.8           30.3                5.6 +/-    0.61       9.7 +/-    0.61  0.030 / 0.030
G07     122.7          46.5                7.6 +/-    2.03      10.0 +/-    2.03  0.030 / 0.040
G08     42.0           11.9                2.6 +/-    2.39       7.0 +/-    2.39  0.040 / 0.080
G11     73.3           42.8                6.4 +/-    0.39       8.9 +/-    0.39  0.040 / 0.060
G13     297.0          36.3                5.6 +/-    1.17       8.7 +/-    1.17  0.090 / 0.110
G17     211.5          48.6                7.2 +/-    1.12       9.2 +/-    1.12  0.080 / 0.100
G18     66.1           24.3                4.7 +/-    0.86       9.4 +/-    0.86  0.070 / 0.150
G19     212.1          26.3                6.7 +/-    3.04      12.6 +/-    3.04  0.060 / 0.170
G28     327.2          60.6                5.1 +/-    0.75       5.8 +/-    0.75  0.110 / 0.120
G30     85.8           79.8                7.1 +/-    0.61       7.2 +/-    0.61  0.120 / 0.110