PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-17:12:30
G07     350.2          63.4               10.9 +/-    0.60      12.1 +/-    0.60  0.030 / 0.040
G08     83.8           53.7               11.3 +/-    0.71      13.6 +/-    0.71  0.050 / 0.050
G09     183.1          61.9               12.0 +/-    0.63      13.4 +/-    0.63  0.080 / 0.060
G11     139.5          19.9               13.7 +/-    2.13      30.3 +/-    2.13  0.080 / 0.060
G23     156.8          25.8               11.3 +/-    2.00      21.7 +/-    2.00  0.040 / 0.040
G27     46.0           24.8                9.6 +/-    1.72      18.9 +/-    1.72  0.040 / 0.040
G28     247.2          38.2               13.0 +/-    0.97      19.5 +/-    0.97  0.080 / 0.160
G30     311.6          43.5                9.6 +/-    1.23      13.2 +/-    1.23  0.070 / 0.160