PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/11-10:42:50
G02     220.2          62.6                6.9 +/-    1.15       7.7 +/-    1.15  0.060 / 0.090
G06     50.1           71.2                6.8 +/-    0.49       7.2 +/-    0.49  0.050 / 0.090
G12     319.8          40.3                4.8 +/-    1.02       7.0 +/-    1.02  0.040 / 0.080
G17     61.9           27.7                4.3 +/-    1.76       7.9 +/-    1.76  0.040 / 0.060
G19     40.4           49.0                5.6 +/-    1.04       7.1 +/-    1.04  0.040 / 0.020
G24     254.7          40.9                6.5 +/-    3.08       9.3 +/-    3.08  0.030 / 0.020
G28     124.7          12.1                6.6 +/-    2.01      17.6 +/-    2.01  0.030 / 0.050