PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/10-10:27:50
G07     329.8          56.8                5.3 +/-    0.68       6.2 +/-    0.68  0.060 / 0.090
G08     100.1          50.9                7.5 +/-    0.60       9.3 +/-    0.60  0.060 / 0.100
G09     186.8          74.0                5.9 +/-    0.67       6.1 +/-    0.67  0.050 / 0.050
G11     146.2          12.3                3.4 +/-    1.43       9.1 +/-    1.43  0.040 / 0.040
G23     154.9          44.3                7.6 +/-    0.99      10.4 +/-    0.99  0.040 / 0.060
G27     57.6           33.0                4.1 +/-    0.92       6.8 +/-    0.92  0.050 / 0.080
G28     235.4          27.5                6.1 +/-    2.29      11.3 +/-    2.29  0.060 / 0.080
G30     299.4          32.3                4.7 +/-    3.24       7.8 +/-    3.24  0.060 / 0.080