PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-06:13:10
G07     46.6           69.2                4.1 +/-    0.40       4.4 +/-    0.40  0.060 / 0.070
G08     52.3           40.8                4.0 +/-    0.63       5.7 +/-    0.63  0.060 / 0.070
G09     178.3          39.1                8.6 +/-    0.61      12.7 +/-    0.61  0.060 / 0.260
G11     120.8          32.8                8.8 +/-    0.71      14.5 +/-    0.71  0.120 / 0.290
G17     199.2          13.7                4.3 +/-    1.43      11.0 +/-    1.43  0.030 / 0.040
G23     161.1          11.5                3.8 +/-    2.29      10.4 +/-    2.29  0.030 / 0.040
G28     272.8          51.8                4.5 +/-    1.23       5.5 +/-    1.23  0.050 / 0.050
G30     330.4          58.3                2.9 +/-    0.60       3.3 +/-    0.60  0.040 / 0.060