PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-06:12:50
G01     122.8          13.3                3.4 +/-    2.51       8.8 +/-    2.51  0.050 / 0.040
G07     64.1           68.5                4.7 +/-    0.94       5.0 +/-    0.94  0.040 / 0.030
G08     49.0           38.1                2.3 +/-    0.58       3.5 +/-    0.58  0.020 / 0.030
G09     176.0          31.5                6.2 +/-    1.17      10.6 +/-    1.17  0.030 / 0.040
G11     117.9          37.9                6.7 +/-    1.04      10.1 +/-    1.04  0.070 / 0.100
G13     319.8          15.3                1.1 +/-    1.57       2.7 +/-    1.57  0.060 / 0.120
G17     199.9          16.7                5.0 +/-    2.44      11.9 +/-    2.44  0.110 / 0.580
G28     272.1          48.3                5.2 +/-    1.45       6.7 +/-    1.45  0.120 / 0.460
G30     332.1          61.0                4.0 +/-    0.73       4.5 +/-    0.73  0.050 / 0.090