PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-06:57:50
G01     70.0           32.8                4.5 +/-    1.11       7.5 +/-    1.11  0.030 / 0.020
G07     137.7          28.7                7.1 +/-    1.08      12.8 +/-    1.08  0.030 / 0.020
G11     52.1           29.0                4.2 +/-    2.31       7.5 +/-    2.31  0.060 / 0.120
G13     273.1          37.8                6.2 +/-    1.79       9.3 +/-    1.79  0.080 / 0.100
G15     304.1          14.1                2.1 +/-    1.69       5.4 +/-    1.69  0.040 / 0.050
G17     235.8          72.5                7.1 +/-    0.45       7.4 +/-    0.45  0.050 / 0.050
G19     224.2          39.7                7.1 +/-    1.27      10.4 +/-    1.27  0.070 / 0.080
G28     17.4           59.8                4.5 +/-    0.64       5.1 +/-    0.64  0.070 / 0.080
G30     136.4          63.0                7.4 +/-    0.73       8.2 +/-    0.73  0.080 / 0.230