PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-08:27:50
G01     96.7           28.8                4.6 +/-    0.96       8.3 +/-    0.96  0.030 / 0.050
G07     118.0          50.4                6.3 +/-    0.52       7.9 +/-    0.52  0.040 / 0.050
G08     41.8           15.3                2.5 +/-    1.65       6.2 +/-    1.65  0.060 / 0.130
G11     79.4           44.0                7.2 +/-    1.74       9.9 +/-    1.74  0.070 / 0.100
G13     301.7          34.4                4.2 +/-    1.17       6.8 +/-    1.17  0.090 / 0.160
G17     208.9          44.3                7.2 +/-    0.94       9.8 +/-    0.94  0.100 / 0.170
G18     70.8           24.6                5.7 +/-    1.19      11.3 +/-    1.19  0.150 / 0.230
G19     210.4          22.3                4.9 +/-    1.57      10.1 +/-    1.57  0.160 / 0.170
G28     318.5          59.8                4.1 +/-    0.67       4.7 +/-    0.67  0.030 / 0.030
G30     56.6           80.9                5.1 +/-    1.15       5.2 +/-    1.15  0.030 / 0.030